Siemens SIMATIC S7-1200 CP 1243-8 IRC - Page 159

Configuration
4.18 Data points
CP 1243-8 IRC
Operating Instructions, 02/2018, C79000-G8976-C385-03
159
●
LATCH_ON/OFF
The function permanently latches a command output to the value 0 or 1.
Note:
The latched value is only canceled by a new command. Alternatively, the command can
be reset by the user program.
●
PULSE_ON/OFF
The function evaluates the number and length of the signals (pulses) of commands from
a master station.
Data point types
The output options can be configured dependent on the protocol for the following data point
types:
● ST7
Command output (Cmd01B_R)
● IEC
Single command
● DNP3
Binary Command Output
Reference to specifications
The output options correspond to the following parts of the specification:
● IEC
Qualifier of command - IEC 60870-5-101, Part 1
● DNP3
Control Code, Operation Type field (OP Type) - Volume 6, Part 2, Objects
Protocol-dependent processing
ST7
● LATCH_ON/OFF
The function latches the value of a command as described above.
● PULSE_ON/OFF
The function evaluates the "command output time" for a single pulse (see below).
IEC
● LATCH_ON/OFF
The function latches the value of a command as described above.