Rockwell Automation 2706-MB1 MESSAGEVIEW 421 SOFTWARE MANUAL User Manual
Page 168
7–47
Creating Messages
Publication 2706-817
Relay
Enable the Relay Energize attribute to trigger (enable) an alarm
relay in a DL50 slave device.
The message with the Relay attribute set is displayed at the same
time as the alarm is triggered, and should explain why the alarm was
triggered.
If the message is divided into packets, the MessageView terminal
sends the packets in this order:
Message Packet #1 – Relay Packet – Message Packet #2 –
Message Packet #3 ...
Important:
The alarm relay will not de-energize until another
message is slaved to that Alarm Relay, disabling it.
!
ATTENTION: Use the alarm relay as a warning only.
Do not use it for control.
Slave Packet transmission rate
Slave Packets are sent to the slave at a user-defined rate called the
Inter-Packet Delay. This delay is the time allowed between
successive packets sent from the master to the slave device.
Inter-Packet Delay is set in the Aux. Port tab of the Terminal Setup
dialog, see Page 10–28.
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