73
6
Message Communication, IOWR / IORD
This section describes the message communication. The PLC program instructions IOWR and IORD are used
to transfer the messages to and from the Unit.
6-1 Message communication ..........................................................................................................................................74
6-2 IOWR.......................................................................................................................................................................74
6-3 IORD........................................................................................................................................................................76
6-4 Messages ..................................................................................................................................................................77
6-4-1 Control command ...........................................................................................................................................78
6-4-2 Slave diagnostics ............................................................................................................................................79
Summary of Contents for C200HW-PRM21
Page 1: ...C200HW PRM21 PROFIBUS DP Master Unit OPERATION MANUAL Cat No W349 E2 2...
Page 2: ......
Page 3: ......
Page 4: ......
Page 5: ...C200HW PRM21 PROFIBUS DP Master Unit Operation Manual Produced May 2000...
Page 6: ...iv...
Page 8: ...vi...
Page 12: ...x...
Page 66: ...Debug mode Section 4 4 50...
Page 98: ...Messages Section 6 4 82...
Page 108: ...Maintenance Section 7 3 92...
Page 110: ...94...
Page 112: ...96...
Page 116: ...100...
Page 120: ...104...
Page 124: ......