HRX-OM-M091
Chapter 6 Communication alarm function
HRS Series
6.1 Communication alarm occurs
6-1
Chapter 6 Communication alarm
function
Monitors whether the serial communication is sent/received properly
between the product and the customer’s device. This feature is only valid
when the communication mode is set to SERIAL mode.
Abnormal signals or disconnection of the communication cable can be
notified immediately by setting the alarm function to match the interval at
which messages are sent from the customer device. When the
communication is restored, the alarm is automatically reset.
Do not use this function when the customer device does not send messages
regularly.
The default setting of this function is “off”.
6.1 Communication alarm occurs
Fig 6.1-1 shows when an alarm occurs. Refer to 6.3 ‘’Setting and checking’’
for the setting method.
●
Changing of communication error
Operation continues when an alarm occurs.
●
Time for monitoring the communication error
180 sec
When the customer's device is sending messages every 60sec, if the
communication cable is disconnected and no message is received for
180sec, the product generates AL19 communication error alarm to notify the
error.
This product
Your system
Write or read
Write or read
60 sec.
60 sec.
60 sec.
60 sec.
Broken
wire
o r
coming
off
Passage of
180 sec.
Excess at no
communicatio
n monitoring
time.
AL19 Communication
error is generated.
Operation continues
Monitoring
time
Monitoring
time
Fig 6.1-1
Communication alarm example
