Digital input modules can be used to connect the PLC to digital process signals. They are suitable for connecting standard switches and two-wire proximity switches (BERO).

Siemens Digital Output Modules SIMATIC S7-300 Product Specifications:

Article number	6ES7322-1BH01-0AA0	6ES7322-1BH10-0AA0	6ES7322-1BL00-0AA0	6ES7322-1BP00-0AA0	6ES7322-1BP50-0AA0	6ES7322-8BF00-0AB0
	SM322, 16DO 24V DC, 0,5A	SM322 High Speed, 16DO 24V DC, 0.5A	SM322, 32DO 24V DC, 0,5A	SM322 64DA, DC24V, 0,3A P-write	SM322 64DO, DC24V, 0.3A M-write	SM322, 8DO, 24V DC, 0,5A
Supply voltage
Load voltage L+
● Rated value (DC)	24 V	24 V	24 V	24 V	24 V	24 V
● permissible range, lower limit (DC)	20.4 V	20.4 V	20.4 V	20.4 V	20.4 V	20.4 V
● permissible range, upper limit (DC)	28.8 V	28.8 V	28.8 V	28.8 V	28.8 V	28.8 V
Input current
from load voltage L+ (without load), max.	80 mA	110 mA	160 mA	75 mA	75 mA	90 mA
from backplane bus 5 V DC, max.	80 mA	70 mA	110 mA	100 mA	100 mA	70 mA
Power loss
Power loss, typ.	4.9 W	5 W	6.6 W	6 W	6 W	5 W
Digital outputs
Number of digital outputs	16	16	32	64	64	8
Short-circuit protection	Yes; Electronic	Yes; Electronic	Yes; Electronic	Yes; Electronic	Yes; Electronic	Yes; Electronic
● Response threshold, typ.	1 A	1 A	1 A	0.7 to 1.9 A		0.75 to 1.5 A
Limitation of inductive shutdown voltage to	L+ (-53 V)	L+ (-53 V)	L+ (-53 V)	L+ (-53 V)	M+ (45 V)	L+ (-45 V)
Controlling a digital input	Yes	Yes	Yes	Yes	Yes	Yes
Switching capacity of the outputs
● on lamp load, max.	5 W	5 W	5 W	5 W	5 W	5 W
Load resistance range
● lower limit	48 Ω	48 Ω	48 Ω	80 Ω	80 Ω	48 Ω
● upper limit	4 kΩ	4 kΩ	4 kΩ	10 kΩ	10 kΩ	3 kΩ
Output voltage
● for signal “1”, min.	L+ (-0.8 V)	L+ (-0.8 V)	L+ (-0.8 V)	L+ (-0.5 V)	M+ (0.5 V)	L+ (-0.8 to -1.6 V)
Output current
● for signal “1” rated value	0.5 A	0.5 A	0.5 A	0.3 A	0.3 A	0.5 A
● for signal “1” permissible range, min.				2.4 mA	2.4 mA
● for signal “1” permissible range, max.				0.36 A	0.36 A
● for signal “1” permissible range for 0 to 40 °C, min.	5 mA	5 mA	5 mA			10 mA
● for signal “1” permissible range for 0 to 40 °C, max.	0.6 A	0.6 A	0.6 A			0.6 A
● for signal “1” permissible range for 40 to 60 °C, min.	5 mA	5 mA	5 mA			10 mA
● for signal “1” permissible range for 40 to 60 °C, max.	0.6 A	0.6 A	0.6 A			0.6 A
● for signal “1” minimum load current	5 mA	5 mA	5 mA			10 mA
● for signal “0” residual current, max.	0.5 mA	0.5 mA	0.5 mA	0.1 mA		0.5 mA
Output delay with resistive load
● “0” to “1”, max.	100 µs	100 µs	100 µs	550 µs	450 µs	180 µs
● “1” to “0”, max.	500 µs	200 µs	500 µs	550 µs	450 µs	245 µs
Parallel switching of two outputs
● for uprating	No	No	No	No	No	No
● for redundant control of a load	Yes	Yes; only outputs of the same group	Yes; only outputs of the same group	Yes	Yes	Outputs with series diodes only
Switching frequency
● with resistive load, max.	100 Hz	1 000 Hz	100 Hz	100 Hz	100 Hz	100 Hz
● with inductive load, max.	0.5 Hz	0.5 Hz	0.5 Hz	0.5 Hz	0.5 Hz	2 Hz
● with inductive load (acc. to IEC 60947-5-1, DC13), max.	0.5 Hz	0.5 Hz	0.5 Hz			2 Hz
● on lamp load, max.	10 Hz	10 Hz	10 Hz	10 Hz	10 Hz	10 Hz
Total current of the outputs (per group)
horizontal installation
— up to 40 °C, max.	4 A	4 A	4 A	1.6 A	1.6 A	4 A
— up to 60 °C, max.	3 A	3 A	3 A	1.2 A	1.2 A	3 A
vertical installation
— up to 40 °C, max.	2 A	2 A	2 A	1.6 A	1.6 A	4 A
Cable length
● shielded, max.	1 000 m	1 000 m	1 000 m	1 000 m	1 000 m	1 000 m
● unshielded, max.	600 m	600 m	600 m	600 m	600 m	600 m
Interrupts/diagnostics/status information
Alarms	No	No	No	No	No
Diagnostics function	No	No	No	No	No	Yes; Parameterizable
Alarms
● Diagnostic alarm	No	No	No	No	No	Yes; Parameterizable
Diagnoses
● Diagnostic information readable			No	No	No	Yes
● Wire-break	No	No	No	No	No	Yes
● Short-circuit	No	No	No	No	No	Yes
● Fuse blown	No	No		No	No	No
● missing load voltage	No	No	No	No	No	Yes
Diagnostics indication LED
● Rated load voltage PWR (green)	No	No	No		No	No
● Fuse OK FSG (green)	No	No	No		No	No
● Group error SF (red)			No		No	Yes
● Status indicator digital output (green)	Yes	Yes; per channel	Yes; per channel		Yes	Yes; per channel
● Channel fault indicator F (red)			No		No	Yes
Potential separation
Potential separation digital outputs
● between the channels	Yes	Yes	Yes	No	No
● between the channels, in groups of	8	8	8	16	16	8
● between the channels and backplane bus	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler
Isolation
Isolation tested with	500 V DC	500 V DC	500 V DC	500 V DC	500 V DC	500 V DC
connection method / header
required front connector	20-pin	20-pin	40-pin	Cable: 6ES7392-4Bxx0-0AA0 terminal blocks: 6ES7392-1xN00-0AA0	Cable: 6ES7392-4Bxx0-0AA0 terminal blocks: 6ES7392-1xN00-0AA0	20-pin
Dimensions
Width	40 mm	40 mm	40 mm	40 mm	40 mm	40 mm
Height	125 mm	125 mm	125 mm	125 mm	125 mm	125 mm
Depth	120 mm	120 mm	120 mm	112 mm	112 mm	120 mm
Weights
Weight, approx.	190 g	200 g	260 g	230 g	230 g	210 g

Article number	6ES7322-5GH00-0AB0	6ES7322-1CF00-0AA0	6ES7322-1BF01-0AA0	6ES7322-1FF01-0AA0	6ES7322-5FF00-0AB0	6ES7322-1FH00-0AA0
	SM322, 16DO, AC/DC24-48V, 0,5A	SM322, 8DO, 48-125V DC, 1,5A	SM322, 8DO, 24V DC, 2A	SM322, 8DO, 120/230V AC, 1A	SM322, 8DO, AC120/230V, 2A	SM322, 16DO, 120/230V AC, 1A
Supply voltage
Mains buffering
● Mains/voltage failure stored energy time	5 ms
Load voltage L+
● Rated value (DC)	24 V; 24 / 48	48 V; 48 V DC to 125 V DC	24 V
● permissible range, lower limit (DC)	20.4 V	40 V	20.4 V
● permissible range, upper limit (DC)	57.6 V	140 V	28.8 V
● Reverse polarity protection	Yes	Yes; through fuse
Load voltage L1
● Rated value (AC)				230 V; 120/230 V AC	230 V; 120/230 V AC	230 V; 120/230 V AC
● permissible range, lower limit (AC)				93 V	79 V	79 V
● permissible range, upper limit (AC)				264 V	264 V	264 V
● permissible frequency range, lower limit				47 Hz
● permissible frequency range, upper limit				63 Hz
Input current
from supply voltage L+, max.	200 mA
from load voltage L+ (without load), max.		2 mA	60 mA
from load voltage L1 (without load), max.				2 mA	2 mA	2 mA
from backplane bus 5 V DC, max.	100 mA	100 mA	40 mA	100 mA	100 mA	200 mA
Power loss
Power loss, typ.	2.8 W	7.2 W	6.8 W	8.6 W	8.6 W	8.6 W
Digital outputs
Number of digital outputs	16	8	8	8	8	16
Short-circuit protection	No; to be provided externally	Yes; Electronic	Yes; Electronic	Yes; Fuse 8 A, 250 V; per group	Yes; to be provided externally; fuse 3.15 A / 250 V, quick response	Yes; Fuse 8 A, 250 V; per group
● Response threshold, typ.		4.4 A	3 A
● required current for fuse shutdown, min.				40 A		40 A
● Response time, max.				300 ms		300 ms
Limitation of inductive shutdown voltage to		M (-1 V)	L+ (-48 V)
Controlling a digital input	Yes	Yes	Yes	Yes	Yes	Yes
Size of motor starters according to NEMA, max.	Size 5 according to NEMA			5 NEMA compliant	Size 5 according to NEMA	4 NEMA compliant
Spare fuses		6.3 A / 250 V, quick-response, 5x 20 mm		8 A / quick response		8 A / quick response
Zero-crossing switch				Yes; Max. 60 V	Yes; 60 V
Switching capacity of the outputs
● on lamp load, max.	2.5 W	15 W; 15 W (48 V) or 40 W (125 V)	10 W	50 W	50 W	50 W
Load resistance range
● lower limit			12 Ω
● upper limit			4 kΩ
Output voltage
● for signal “1”, min.	L+ (-0.25 V)	L+ (-1.2 V)	L+ (-0.8 V)	L1 (-1.5 V)	L1 (-8.5 V)
● for signal “1” (at max. current), min.				L1 (-1.5 V)		L1 (-1.5 V)
● for signal “1” (at min. current), min.				L1 (-8.5 V)		L1 (-8.5 V)
Output current
● for signal “1” rated value	0.5 A	1.5 A	2 A	2 A	2 A	1 A
● for signal “1” permissible range for 0 to 40 °C, min.		10 mA	5 mA	10 mA	10 mA	10 mA
● for signal “1” permissible range for 0 to 40 °C, max.	0.5 A	1.5 A	2.4 A	2 A	2 A	1 A
● for signal “1” permissible range for 40 to 60 °C, min.		10 mA	5 mA	10 mA	10 mA	10 mA
● for signal “1” permissible range for 40 to 60 °C, max.	0.5 A	1.5 A	2.4 A	1 A	1 A	0.5 A
● for signal “1” minimum load current		10 mA	5 mA	10 mA	10 mA	10 mA
● for signal “1” permissible surge current, max.	1.5 A; for 50 ms, 1 A 2 s one-time	3 A; for 10 ms		20 A; max. 1 AC cycle	20 A; with 2 half waves	20 A; with 2 half waves
● for signal “0” residual current, max.	10 µA	0.5 mA	0.5 mA	2 mA	2 mA	2 mA
Output delay with resistive load
● “0” to “1”, max.	6 ms	2 ms	100 µs	1 AC cycle
● “1” to “0”, max.	3 ms	15 ms	500 µs	1 AC cycle
Parallel switching of two outputs
● for uprating	No	No	No	No	No	No
● for redundant control of a load	Yes	Yes; only outputs of the same group	Yes	Yes	Yes	Yes; only outputs of the same group
Switching frequency
● with resistive load, max.	10 Hz	25 Hz	100 Hz	10 Hz	10 Hz	10 Hz
● with inductive load, max.	0.5 Hz	0.5 Hz	0.5 Hz	0.5 Hz	0.5 Hz	0.5 Hz
● with inductive load (acc. to IEC 60947-5-1, DC13), max.	0.5 Hz	0.5 Hz	0.5 Hz
● with inductive load (acc. to IEC 60947-5-1, AC15), max.				0.5 Hz	0.5 Hz	0.5 Hz
● on lamp load, max.	0.5 Hz	10 Hz	10 Hz	1 Hz	1 Hz	1 Hz
Total current of the outputs (per group)
horizontal installation
— up to 40 °C, max.	0.5 A; 8 A per module	6 A	4 A	4 A	8 A	4 A
— up to 50 °C, max.		4 A
— up to 60 °C, max.	0.5 A; 8 A per module	3 A	4 A	2 A	4 A	2 A
vertical installation
— up to 40 °C, max.	0.5 A; 8 A per module	4 A	4 A	2 A	4 A	2 A
Cable length
● shielded, max.	1 000 m	1 000 m	1 000 m	1 000 m	1 000 m	1 000 m
● unshielded, max.	600 m	600 m	600 m	600 m	600 m	600 m
Interrupts/diagnostics/status information
Alarms		No	No	No
Diagnostics function	Yes; Parameterizable	No	No	Yes; Fuse blown or load voltage missing	Yes; Parameterizable	Yes; Fuse blown or load voltage missing
Alarms
● Diagnostic alarm	Yes; Parameterizable	No	No	No	Yes; Parameterizable	No
Diagnoses
● Diagnostic information readable	Yes
● Wire-break		No	No	No		No
● Short-circuit		No	No	No		No
● Fuse blown		No	No	Yes		Yes
● missing load voltage		No	No	Yes		No
Diagnostics indication LED
● Rated load voltage PWR (green)		No	No	Yes		No
● Fuse OK FSG (green)		No	No	Yes		Yes; Red LED for fuse
● Group error SF (red)	Yes	Yes		Yes	Yes	Yes
● Status indicator digital output (green)	Yes	Yes	Yes; per channel	Yes	Yes	Yes
Potential separation
Potential separation digital outputs
● between the channels	Yes	Yes	Yes	Yes	Yes
● between the channels, in groups of	1	4	4	4	1	8
● between the channels and backplane bus	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler
● between the channels and the power supply of the electronics	Yes
Isolation
Isolation tested with	1 500 V AC	1 500 V AC	500 V DC	1 500 V AC	1 500 V AC	4 000 V DC
connection method / header
required front connector	40-pin	20-pin	20-pin	20-pin	40-pin	20-pin
Dimensions
Width	40 mm	40 mm	40 mm	40 mm	40 mm	40 mm
Height	125 mm	125 mm	125 mm	125 mm	125 mm	125 mm
Depth	120 mm	120 mm	120 mm	120 mm	120 mm	120 mm
Weights
Weight, approx.	260 g	250 g	190 g	275 g	275 g	275 g

Article number	6ES7322-1FL00-0AA0	6ES7322-1HF01-0AA0	6ES7322-1HF10-0AA0	6ES7322-5HF00-0AB0	6ES7322-1HH01-0AA0
	SM322, 32DO, 120/230V AC, 1A	SM322, 8DA, 24V DC/2A or 230V AC/2A	SM322, 8DA, 24V DC/5A OR 230V AC/5A	SM322, 8DO Relay, 24VDC, 120-230V AC, 5A	SM322, 16DO Relay
Supply voltage
Load voltage L+
● Rated value (DC)		24 V	120 V	24 V	120 V
● permissible range, lower limit (DC)				24 V
● permissible range, upper limit (DC)				120 V
Load voltage L1
● Rated value (AC)	120 V; 120/230 V AC		230 V	230 V	230 V
● permissible range, lower limit (AC)	79 V
● permissible range, upper limit (AC)	264 V
● permissible frequency range, lower limit	47 Hz
● permissible frequency range, upper limit	63 Hz
Input current
from supply voltage L+, max.		160 mA	125 mA	160 mA	250 mA
from load voltage L1 (without load), max.	10 mA
from backplane bus 5 V DC, max.	190 mA	40 mA	40 mA	100 mA	100 mA
Power loss
Power loss, typ.	25 W	3.2 W	3.2 W	3.5 W	4.5 W
Digital outputs
Number of digital outputs	32	8; Relays	8; Relays	8; Relays	16; Relays
Short-circuit protection	No	No	No; to be provided externally	No; to be provided externally	No
Controlling a digital input	Yes	Yes	Yes	Yes	Yes
Size of motor starters according to NEMA, max.	Size 4 according to NEMA				Size 5 according to NEMA
Zero-crossing switch	Yes; Max. 60 V
Switching capacity of the outputs
● on lamp load, max.	50 W	50 W	1 500 W; 230 V AC	1 500 W; 230 V AC	50 W; 230 V AC
● Low energy/fluorescent lamps with electronic control gear		10x 58 W	10x 58 W	10x 58 W
● Fluorescent tubes, conventionally compensated		1x 58 W	1x 58 W	1x 58 W
● Fluorescent tubes, uncompensated		10x 58 W	10x 58 W	10x 58 W
Output voltage
● for signal “1”, min.	L1 (-0.8 V)
Output current
● for signal “1” rated value	1 A	2 A	5 A	5 A	2 A
● for signal “1” permissible range for 0 to 40 °C, min.	10 mA
● for signal “1” permissible range for 0 to 40 °C, max.	1 A
● for signal “1” permissible range for 40 to 60 °C, min.	10 mA
● for signal “1” permissible range for 40 to 60 °C, max.	1 A
● for signal “1” minimum load current	10 mA	5 mA	5 mA	10 mA	10 mA
● for signal “1” permissible surge current, max.	10 A; per group (for 2 AC cycles)
● for signal “0” residual current, max.	2 mA
Output delay with resistive load
● “0” to “1”, max.	1 AC cycle
● “1” to “0”, max.	1 AC cycle
Parallel switching of two outputs
● for uprating	No	No	No	No	No
● for redundant control of a load	Yes; only outputs of the same group	Yes	Yes	Yes	Yes
Switching frequency
● with resistive load, max.	10 Hz	2 Hz	2 Hz	2 Hz	1 Hz
● with inductive load, max.	0.5 Hz	0.5 Hz	0.5 Hz	0.5 Hz	0.5 Hz
● with inductive load (acc. to IEC 60947-5-1, AC15), max.	0.5 Hz
● With inductive load (to IEC 60947-5-1, DC13/AC15), max.		0.5 Hz	0.5 Hz	0.5 Hz	0.5 Hz
● on lamp load, max.	1 Hz	2 Hz	2 Hz	2 Hz	1 Hz
● mechanical, max.		10 Hz	10 Hz	10 Hz	10 Hz
Total current of the outputs (per group)
horizontal installation
— up to 40 °C, max.	4 A
— up to 60 °C, max.	3 A		5 A	5 A	8 A
vertical installation
— up to 40 °C, max.	4 A		5 A	5 A	8 A
Relay outputs
● Rated supply voltage of relay coil L+ (DC)		24 V; 110 mA	24 V		24 V
● Contact connection (internal)		Yes; SIOV-CU4032 K275G	No	Yes; 330 Ohm, 0.1uF	No
● Number of operating cycles, max.		300 000; 230 V AC: 100 000; 120 V AC: 200 000; 24 V DC: 300 000 (at 2 A)	300 000; 300 000 (24 V DC, at 2 A); 200 000 (120 V AC, at 3 A); 100 000 (230 V AC, at 3 A)	100 000; 100 000 (24 V DC, at 5 A), 100 000 (230 V AC, at 5 A)	100 000; 50 000 (24 V DC, at 2 A); 700 000 (120 V AC, at 2 A); 100 000 (230 V AC, at 2 A)
Switching capacity of contacts
— with inductive load, max.		2 A; 2 A (230 V AC), 2 A (24 V DC)	3 A; 3 A (230 V DC), 2 A (24 V AC)	5 A; 5 A (230 V DC), 5 A (24 V AC)	2 A; 2 A (230 V AC), 2 A (24 V DC)
— with resistive load, max.		2 A	8 A; 8 A (230 V DC), 5 A (24 V AC)	5 A; 5 A (230 V DC), 5 A (24 V AC)	2 A; 2 A (230 V AC), 2 A (24 V DC)
— Thermal continuous current, max.		3 A	8 A	5 A	2 A
Cable length
● shielded, max.	1 000 m	1 000 m	1 000 m	1 000 m	1 000 m
● unshielded, max.	600 m	600 m	600 m	600 m	600 m
Interrupts/diagnostics/status information
Alarms	No	No	No	Yes	No
Diagnostics function	Yes; Fuse blown or load voltage missing	No	No	Yes; Parameterizable	No
Alarms
● Diagnostic alarm	No	No	No	Yes; Parameterizable	No
Diagnoses
● Diagnostic information readable				Yes
● Wire-break		No	No		No
● Short-circuit		No	No		No
● Fuse blown		No	No		No
● missing load voltage		No	No		No
Diagnostics indication LED
● Rated load voltage PWR (green)		No	No		No
● Fuse OK FSG (green)		No	No		No
● Group error SF (red)	Yes			Yes
● Status indicator digital output (green)	Yes; per channel	Yes	Yes	Yes	Yes
Potential separation
Potential separation digital outputs
● between the channels	Yes	Yes	Yes	Yes	Yes
● between the channels, in groups of	8	2	1	1	8
● between the channels and backplane bus	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler
● Between the channels and the power supply of the relays				Yes
Isolation
Isolation tested with	4 000 V DC	1 500 V AC	2 000 V AC	1 500 V AC	1 500 V AC
connection method / header
required front connector	20-pin	20-pin	40-pin	40-pin	20-pin
Dimensions
Width	80 mm	40 mm	40 mm	40 mm	40 mm
Height	125 mm	125 mm	125 mm	125 mm	125 mm
Depth	117 mm	120 mm	120 mm	120 mm	120 mm
Weights
Weight, approx.	500 g	190 g	320 g	320 g	250 g