Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 240

DeviceNet I/O Link Unit
Specifications
LED Indicators
Handling Unit Errors
Usage Procedure
Connect the Unit.
Determine the node number of the
DeviceNet I/O Link Unit and set
the rotary switches.
Wire the DeviceNet transmission
path.
220
Item
Model number
Master/slave
Number of I/O points
Number of words allocated
in CPU Unit I/O memory
Node number setting
Communications current
consumption
Indicator Color Status
MS Green Lit
Flashing Switch settings being read
Red
Lit
Flashing Nonfatal error: Incorrect switch settings.
--- OFF
NS Green Lit
Flashing Network normal and communications not
Red Lit
Flashing Nonfatal communications error: Communications
--- OFF
If an error occurs in the DeviceNet I/O Link Unit, the Error Flags in AR 0200 to
AR 0202 will be turned ON. The addresses of the Error Flags are in the order that
the Expansion Units are connected in the PC, with AR 0200 used for the Expan-
sion Unit closest to the CPU Unit. Use these flags in the program when it is nec-
essary to detect errors.
Connect the DeviceNet I/O Link Unit.
The node number should be a unique number between 0 and 63.
Use the DIP switch to set the DeviceNet I/O Link Unit's baud rate
and the status of output data when a communications error occurs.
Connect the DeviceNet I/O Link Unit to a DeviceNet trans-
mission path.
Specification
CPM1A-DRT21
DeviceNet Slave
32 input points, 32 output points
2 input words, 2 output words
(Allocated in the same way as Expansion I/O Units
and other Expansion Units)
Set using the rotary switches
(Set before turning ON the CPU Unit's power supply.)
30 mA
Meaning
Normal status
Fatal hardware error (watchdog timer)
Power not supplied.
Waiting for initialization to start.
Reset in progress.
Network normal and communications
established.
established.
Fatal communications error: Unit has detected
network status preventing normal
communications.
Node number duplications
Bus OFF detected.
timeout or communications error for one or more
slaves.
Waiting for node number check by master.
Switch setting error.
Power not supplied.
Section 3-4