Siemens SIMATIC S7-300 Module data Reference Manual

A-6
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Data record 1 structure
The figure below shows the structure of data record 1 for the parameters of the
digital output modules.
You activate a parameter by setting the corresponding bit in byte 0 to “1”.
Byte 0
76 0
1
Hold last valid value
Apply substitute value
Diagnostics interrupt enable
Byte 3
Not relevant
Byte 1
76 054321
Byte 2
76 0
Enable substitute value 1 on channel 15
54321
Substitute value
Substitute value
Enable substitute value 1 on channel 7
Enable substitute value 1 on channel 6
Enable substitute value 1 on channel 5
Enable substitute value 1 on channel 4
Enable substitute value 1 on channel 3
Enable substitute value 1 on channel 2
Enable substitute value 1 on channel 1
Enable substitute value 1 on channel 0
Enable substitute value 1 on channel 8
Enable substitute value 1 on channel 9
Enable substitute value 1 on channel 10
Enable substitute value 1 on channel 11
Enable substitute value 1 on channel 12
Enable substitute value 1 on channel 13
Enable substitute value 1 on channel 14
Behavior on CPU STOP
Figure A-2 Data Record 1 for Parameters of the Digital Output Modules
Note
You should only enable the parameters in byte 0, “Hold last valid value” and
“Enable substitute value” as an alternative.

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)