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Process interfacing via an automation system (PLC, PC)
9.3 Control with Ident profile
Command: Set digital out
Writing command data
The command data to be "written" in the "PHYSICAL WRITE" command contains the
command identifier and six parameters.
With this command, the four logical signals "EXT_1", "EXT_2", "EXT_3" and "EXT_4" can be
set and linked to other logical signals. These signals can only be set through an automation
system. In addition, these signals can be applied to the available digital output pins via the
WBM.
Receipt of this command is logged in the diagnostics data records. If the command contains
an invalid parameter, a negative acknowledgement is sent.
The "PHYSICAL WRITE" command must specify the length "0x07"
("CMD_STRUCT.LEN_DATA = 0x07"); otherwise, the command receives a negative
acknowledgment.
Table 9- 22
Parameter
CMD
OFFSETBUFFER
EPCID_UID
LEN_DATA
ADDR_TAG
Table 9- 23
Address
0x0000
0x0001
0x0002
118
CMD_STRUCT
Value
0x71
0x00
0x00
0x07
0x00
Memory area of the receive data (TXREF or RXREF)
Value
0x08
0x01 ... 0x04
0x00 ... 0x02
Meaning
Command identifier "Set digital out".
Number of the logical external signal. Corre-
sponds to "EXT_1", "EXT_2", "EXT_3" and
"EXT_4".
Level of the signal
0x00: Set level statically to "low".
•
0x01: Set level statically to "high".
•
0x02: Set level for configured pulse time to
•
"high".
Operating Instructions, 05/2019, C79000-G8976-C494-02
SIMATIC MV500
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