Balluff BIS M-370-000-A02, Manual, Page: 88 / 198

Industrial Ethernet (IND)
INTERFACE
81
5
5.7 CHECKING ONDEMAND STATUS
Now that you have configured the BIS M-626
’s Node and defined corresponding
Write and
Read Tags in the PLC, the last step is to check the communication status between the BIS
M-626 and the PLC.
Return to the BIS M-626
’s
HTTP Server - Main Page and
click the link labeled “
OnDemand
Status
.” The
OnDemand Status Page will be displayed.
Figure 51 - The OnDemand Status Page
The OnDemand Status Page provides statistical information regarding the connection status
of the BIS M-626. This information can be used to verify that read and write connections
between the BIS M-626 and the PLC have been established successfully.

Read Counts : this value indicates the number of times the BIS M-626 has checked
the PLC for new data.

Write Counts : this value indicates the number of times the BIS M-626 has provided
data to the PLC.
NOTE
That under
Industrial Ethernet (IND)
, the host (and/or PLC) acts as the
server. However, additional messaging instructions are not required on
the part of the host because the BIS M-626 will automatically poll the
Read Tag in the PLC at the interval specified by the Read Delay value
set via the On Demand Configuration Utility.
There is no delay parameter when writing data to the PLC, as the BIS M-626 delivers all
PLC-bound data immediately after it is generated.
If you configured a low Read Delay value, the Read Counts on the On Demand Status Page
will accumulate rapidly. This occurs because a low Read Delay value instructs the BIS M-626
to poll the PLC for new data more frequently.
If the BIS M-626 and PLC do not successfully establish a connection, cycle power
to the BIS M-626 and verify that
Industrial Ethernet (IND)
services are running
properly on the PLC. If that does not resolve the issue, restart
Industrial Ethernet
(IND)
services on the PLC and the 1756-ENBT module.
CAUTION