UMDIO128CO V2.0.1 Preliminary Documentation – May be Subject to Change 6-53
The DIO128 is a versatile controller compliant with the CiA standard DS-401. It supports many
objects from that device profile as well as some manufacturer objects to provide expanded
functionality. All objects are user configurable using standard commercially available tools that can
interact with a CANopen ® Object Dictionary via an .EDS file.
Depending on how they set it up, the user can easily switch from having the relays respond to CAN
commands; using the discrete inputs to drive some or all of the outputs; having them go to an
individually preset state in error mode; or to enable/disable them using a discrete input(s).
1.2. LED
Indicator
A front panel bi-color LED indicator allows user to observe the current state of DIO128 and easily
identify a normal operating condition and situations when there is a network error or absence of
network traffic. In case of an error on the network, power glitch or other emergency situation, the
DIO128 will self-recover to the pre-operational mode immediately after the normal condition is
restored.
State Relay
Operation
LED
Operation
Notes
INITIALIZING OFF
OFF
PRE-
OPERATIONAL
Respond only to discrete input
(DI) commands
Solid GREEN
OPERATIONAL Respond to both DI and CAN
data (RPDO1) commands
Blinking
GREEN
If no CAN messages are
received after 3 seconds,
LED will alternate blinking
RED and GREEN
STOPPED OFF
Blinking
RED
BUSOFF
Error Value or per Pre-Op state Solid RED
If bit in DO Error Mode
object 6206h is set, the
Error Value is applied
Lost Consumer
Heartbeat
Error Value or per State
selected by Error Behaviour
object 1029h
Per node state
RPDO1
Timeout
Table 1 – Relay and LED Operation Depending on Node State
