2.4 Communications with MP-series Controllers
Message Functions
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Note: The status is updated when the function is executed in each scan.
Status 3 (PARAM06)
This parameter gives the value of the send pass counter.
Note: The status is updated when the function is executed in each scan.
Status 4 (PARAM07)
This parameter gives the value of the receive pass counter.
Note: The status is updated when the function is executed in each scan.
Status 5 (PARAM08)
This parameter gives the value of the error counter.
Note: The status is updated when the function is executed in each scan.
Status 6 (PARAM09)
This parameter is not used for the Extended MEMOBUS protocol.
Connection Number (PARAM10)
Specify the remote station.
If the communications device is the 218IFD, enter the connection number. The valid setting range is given
in the following table.
4 Connection Error
M-SND: The remote station rejected an attempt to
open a TCP connection.
5 Connection Error
M-RCV: An error occurred while passively opening a
TCP connection.
6 System Error A socket polling error occurred while receiving data.
7 TCP Data Send Error The remote station does not exist.
8 UDP Data Send Error
The data send request command was sent to a socket
that does not exist.
9 TCP Data Receive Error
A disconnection request was received from the remote
station.
10 UDP Data Receive Error
A data receive request was executed for a socket that
does not exist.
11 Changing Socket Option Error
A system error occurred while changing the socket
options.
12 Data Conversion Error Error in protocol conversion
Status 3 Value Meaning Description
0 to 65535 Send Count Counts the number of times a message was sent.
Status 4 Value Meaning Description
0 to 65535 Receive Count Counts the number of times a message was received.
Status 5 Value Meaning Description
0 to 65535 Error Count
Counts the number of errors that occurred during message pro-
cessing.
Continued from previous page.
Status 2 Value Meaning Description
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