YASKAWA MP2000 Series Troubleshooting Manual

3.4 Communication Broken off during Message Communication
3.4.2 When an Error Is in Effect
3-24
3.4.2 When an Error Is in Effect
The table below shows the possible causes for a message communication break during the process of normal communi-
cation with an error indicated in the error status of the module detailed definition or in the process result of the message
function, in addition to the causes listed in 3.4.1 When No Error Is in Effect.
Module Model Condition Cause Remedy
Built-in Ether-
net, 218IF-02, or
218IF-01 Mod-
ule
Communication is carried
out with multiple remote
stations simultaneously.
The connection parameters or message
functions are not prepared for the number
of remote stations to communicate with.
Prepare the connection parameters and message
functions for the number of remote stations to
communicate with.
(Communication with only one station (one
connection) at one time is possible with one set
of connection parameters and one message
function.)
Multiple message func-
tions are being executed
simultaneously.
More than one message function has been
executed simultaneously for the same Cir-
No (circuit number) and Ch-No (communi-
cation buffer channel number) or
PARAM02 (connection number).
Review the ladder program so that more than
one message function will not be executed
simultaneously.
If the communication breaks off due to this
cause, the details of the error can be checked in
the process result of the message function.
Refer to 3.3.3 ( 1 ) Checking the Process Result
and the Status.
Built-in Ethernet
Module
A communication error
occurs during message
communication in connec-
tion number 1.
The message function and automatic recep-
tion are executed simultaneously for con-
nection number 1.
Execute either of automatic reception or the
message function according to the conditions of
use.
By default, automatic reception is enabled for
connection number 1.
For the procedure for checking the automatic
reception setting, refer to 3.3.2 Checking the
Connection Parameters.

YASKAWA MP2000 Series Specifications

General

Brand	YASKAWA
Model	MP2000 Series
Category	Controller
Language	English