Mitsubishi Electric MELSEC iQ-R Series - Chapter 17 Communicating Using 1 C Frames; Message Format

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17 COMMUNICATING USING 1C FRAMES
17.1 Message Format
17 COMMUNICATING USING 1C FRAMES
This chapter explains the functions when accessing using 1C frame and their message format.
1C frame is compatible with the communication function of the dedicated protocols supported by A series computer link
modules.
Only the commands for 1C frame explained in this chapter can be used for 1C frame.
17.1 Message Format
This section explains the message format when communicating data using 1C frame.
Message format
■Request message
■Response message (Normal completion: Response data)
■Response message (Normal completion: No response data)
■Response message (Abnormal completion)
Setting data
Set the following items.
Item Description Reference
Data by format The message formats differ depending on the set format (Format 1 to
Format 4).
Page 29 Message Formats of Each Protocol
Access route Station No. Specify the station to be connected from an external device. Page 50 Station No.
PC No. Specify the network module station No. of an access target. Page 52 Network No., PC No.
Data by the format Access route Request data Data by the format
Station
No.
Character area
Command Message wait
PC No.
Data by the format Access route Data by the format Response data Data by the format
Station
No.
PC No.
Character area
Data by the format Access route Data by the format
Station
No.
PC No.
Access route
Data by the format Data by the format
PC No.
Station
No.
Error
code