Siemens SIMATIC MV540 H - Page 117

Process interfacing via an automation system (PLC, PC)
9.3 Control with Ident profile
SIMATIC MV500
Operating Instructions, 06/2018, C79000-G8976-C494-01
117
Table 9- 18 CMD_STRUCT
Parameter
Value
CMD
0x71
OFFSETBUFFER 0x00
EPCID_UID
0x00
LEN_DATA 0x01
ADDR_TAG
0x00
Table 9- 19 Memory area of the receive data (TXREF or RXREF)
Address
Value
Meaning
0x0000 0x05 Command identifier
"Set DISA bit"
Command: Reset DISA bit
The command data to be "written" in the "PHYSICAL WRITE" command only contains the
command identifier "Reset DISA bit".
If the "DISA" bit of the optical reader has been reset, the command receives positive
acknowledgment. If it was already reset, this command has no effect but is nevertheless
positively acknowledged.
The "PHYSICAL WRITE" command must specify the length "0x01" ("CMD_STRUCT.Length
= 0x01"); otherwise, the command receives a negative acknowledgment.
Table 9- 20 CMD_STRUCT
Parameter
Value
CMD
0x71
OffsetBuffer
0x00
UID
0x00
Length
0x01
StartAddress
0x00
Table 9- 21 Memory area of the receive data (TXREF or RXREF)
Address
Value
Meaning
0x0000 0x06 Command identifier
"Reset DISA bit"