Siemens SIMATIC MV500 - Page 164

Process interfacing via an automation system (PLC, PC)
9.3 Control with Ident profile
SIMATIC MV500
164 Operating Instructions, 03/2021, C79000-G8976-C494-05
The "PHYSICAL WRITE" command must specify the length "0x07" ("CMD_STRUCT.LEN_DATA =
0x07"); otherwise, the command receives a negative acknowledgment.
Table 9- 22 CMD_STRUCT
Parameter
Value
CMD
0x71
OFFSETBUFFER
0x00
EPCID_UID
0x00
LEN_DATA
0x07
ADDR_TAG
0x00
Table 9- 23 Memory area of the receive data (TXREF or RXREF)
Address
Value
Meaning
0x0000
0x08
Command identifier "Set digital out".
0x0001
0x01 ... 0x04
Number of the logical external signal. Corre-
sponds to "EXT_1", "EXT_2", "EXT_3" and "EXT_4".
0x0002
0x00 ... 0x02
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".
0x0003
0x01 ... 0x07
Link type
• 0x01: Logical "OR"
• 0x02: Logical "AND"
• 0x03: Logical "Exclusive OR"
• 0x04: no link
• 0x05: Logical "OR not"
• 0x06: Logical "AND not"
•
0x07: Logical "Exclusive OR not"
0x0004
0x00 ... 0x05
Logical signal for linking.
If the link type is 0x4, the parameter has no signif-
icance.
• 0x00: Logical signal "IN_OP"
• 0x01: Logical signal "TRD"
• 0x02: Logical signal "RDY"
• 0x03: Logical signal "READ"
• 0x04: Logical signal "MATCH"
•
0x05: Logical signal "NOK"
0x0005
0x00
Reserved. Must be "0x00" to maintain upwards
compatibility.
0x0006
0x00
Reserved. Must be "0x00" to maintain upwards
compatibility.