2.7 Communications with a Mitsubishi PLC (QnA-compatible 3E Frame Protocol)
Message Functions
2-175
MSG-RCVE Function Parameters
The following table describes the contents of the addresses specified by the PARAM input parameter to
the MSG-RCVE function.
No. I/O Meaning Description
Status
00
Out-
puts
Processing Result Gives the processing status.
01 Status Gives the status of the current function.
02 Detail Error Code, Lower Word
Gives the details of an error.
03 Detail Error Code, Upper Word
04 Status 1 Gives the communications status.
05 Status 2 Gives status information on the most recent error.
06 Status 3 Gives the value of the send pass counter.
07 Status 4 Gives the value of the receive pass counter.
08 Status 5 Gives the value of the error counter.
09 Status 6 Reserved for system.
Parameters
10 Inputs Connection Number
Sets the connection number used to determine the
remote station.
11 I/O Option
Not used for the QnA-compatible 3E Frame pro-
tocol.
12
Out-
puts
Function Code
Gives the function code requested by the remote
station.
13 I/O Reserved for system.
−
14
Out-
puts
Data Address, Lower Word
Gives the first address of the data that was
requested by the remote station.
15 Data Address, Upper Word
16 Register type
Gives the register type that was requested by the
remote station.
17 Data Size
Gives the data size that was requested by the
remote station.
18 Remote CPU Module Number
Not used for the QnA-compatible 3E Frame pro-
tocol.
19 I/O Reserved for system.
−
Continued on next page.
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