Omron DEVICENET SAFETY - SYSTEM CONFIGURATION 07-2009 System Configuration Manual page 339

Message Timer Settings
Message Timer Tab Page (Device - Parameter - Edit)
The default value for the message timer is 2 seconds (2,000 ms). Set a value between 500 and 30,000 in incre-
ments of milliseconds.
Use the following procedure to change the value.
1. Double-click a node address (#) (or select a node address and click the Edit Button) to change the setting.
The following dialog box will be displayed.
2. Enter a value and click the OK Button.
Note To set the same value for all the devices, select the node address value you want to set and click the
Copy to All Device Button.
Note (1) The message timer monitors timeouts in message communications (the same timer is used for both
explicit message communications and FINS communications messages), and it can be set for each
device for which communications are performed (message destinations).
(2) If the target communications device (i.e., the message destination) is slow to respond, the message
time setting will need to be increased. (The response may take a long time especially when crossing
network layers for FINS message communications. Set a longer timer value when crossing network
layers.) When a long timer value is set, however, the next message cannot be sent to the same com-
munications device while waiting for a response.
(3) The DeviceNet Unit monitors message timeouts by using this timer. In contrast, monitoring using the
response monitoring time for CMND, SEND, and RECV instructions is performed by the CPU Unit.
Appendix A
305