Omron SYSMAC CJ1W-SCU41-V1

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Mitsubishi Computer Link Master (A-compatible 1C Frame, Model 1) Appendix E
Command Response Formats
Note In the following diagrams “hex” indicates hexadecimal values. Values in quotation marks, such as “00”
indicate ASCII characters.
Command Frame
Response Frame
• Normal Response Type 1
• Normal Response Type 2
• Error Response
Command Frame Contents
ENQ
05 hex
2 b
y
tes
Checksum
PLC
No.
Characters (text)
@@ hex @@ hex @@ hex @@ hex
1 byte 2 bytes 2 bytes 2 bytes 1 byte
30 hex
Station
No.
Command
code
Transmission
delay
STX
PLC
No.
Characters (text) ETX Checksum
1 b
y
te 1 b
y
te 1 b
y
te 1 b
y
te 1 b
y
te
03 hex
1 b
y
te 1 b
y
te 1 b
y
te
02 hex
@@ hex @@ hex @@ hex @@ hex
Station
No.
ACK
PLC
No.
06 hex
1 byte 1 byte 1 byte 1 byte
@@ hex @@ hex @@ hex @@ hex
1 byte
Station
No.
2 bytes
02 hex
1 byte 1 byte 1 byte 1 byte
@@ hex @@ hex @@ hex @@ hex
1 byte
NAK
PLC
No.
Error code
Station
No.
Item Contents
Control code ENQ (05 hex) for A-compatible 1C frames, model 1.
Station No. This number distinguishes the remote destination Computer Link Module.
Setting range: 00 to 1 F hex (0 to 31 decimal), or FF hex (255 decimal) using global function. Set in
2 digits hexadecimal.
PLC No. This number distinguishes the remote destination Sequencer CPU Module. Set in 2 digits hexadeci-
mal
Accessing Sequencer CPU Module (local station) that is directly connected to the host using serial
communications: All FF hex (255 decimal)
Accessing Sequencer CPU Module (local station) on the MELSECNET or Ethernet network that is
not directly connected to the host using serial communications:01 to 40 hex (1 to 64 decimal) or 00
hex (0 decimal).
Command code Specify the processing command to read/write device memory and execute remote RUN/STOP of
the Mitsubishi Sequencer CPU Module at the remote destination.
Send delay This is the delay until a response is returned from the remote destination Computer Link Module.
The send delay is not supported by this protocol, and 0 hex (0 ms) is set in the command frame
automatically.
Device type Set the following device type characters in ASCII.
All characters except T/C: X, Y, M, L, S, B, F, M, D, W, R, D
T/C characters: TS (contact), TC (coil), CS (contact), CC (coil), TN (PV), CN (PV)