Checking Operation; Indicator Status; Reading And Writing Data; I/O Between Remote I/O Terminals - Omron 3G3MV-PDRT2 User Manual

Example System Startup
2-5

Checking Operation

Use the procedures provided here to check that I/O communications are operating normally.

2-5-1 Indicator Status

I/O communications are operating normally if the MS and NS indicators for all nodes are lit green,
and the 7-segment indicator on the front panel of the DeviceNet (Master) Unit is displaying the node
address of the DeviceNet (Master) Unit as shown in the following diagram, and the scan list is
enabled. The following example shows a node address of 63 for the DeviceNet (Master) Unit.

2-5-2 Reading and Writing Data

Connect the Peripheral Device for the PLC to the DeviceNet (Master) Unit, write the DeviceNet (Mas-
ter) Unit's OUT Area and read the IN Area, and check that the data are the same in the Slaves.
Refer to the operation manual for the DeviceNet (Master) Unit for details on OUT Area and IN Area
addresses and how to allocate Slave I/O.

I/O between Remote I/O Terminals

■
Create ladder programs in the PLC of the DeviceNet (Master) Unit, and check that when the switch
on the DRT2-ID16 Input Terminal turns ON, the indicator on the DRT2-OD16 Output Terminal is ON.
330100
Master Unit
7-segment Display
ON: Slave function operation is stopped.
OFF: Scan list enabled.
Master Unit node address 63
When an error has occurred, the display
alternates between the error code and the
node address where the error occurred.
Switch 1 (bit 00)
320200
DRT2-OD16 Remote I/O Terminal,
16 transistor outputs (Node 02)
Indicator (bit 00)
Master Unit
DRT2-ID16 Remote I/O
Terminal, 16 transistor
inputs (Node 01)
Chapter 2
2-13