IP67 Digital I/O Modules for EtherNet/IP
5. Specific Behavior
I/O behavior
When the HarshIO 600 eIP is running (Scanner connection in progress) if the module detects a connection
lost with the Scanner, the module sets automatically the output process data to 0.
The detection of the connection lost with the Scanner is calculated based on the time-out (multiplier x RPI)
defined in the I/O connection (Forward_Open request) sent by the scanner.
IDLE behavior
An EtherNet/IP scanner can produce the output process data in IDLE mode (typically when it is in
programming mode). In this case the controller maintains its I/O connections open but informs the devices the
output process data must not be processed.
When the HarshIO 600 eIP received output data in IDLE mode,
the scrolling display shows EIP:IDLE
the module sets all its outputs to 0
the module produces its inputs to the scanner
Duplicate IP address
The HarshIO 600 eIP performs a duplicate IP address checking according to ACD method (IPv4 Address
Conflict Detection) defined by ODVA and RFC 5227.
The goal of this feature is to ensure that the IP address is not used by another device on the network. This
mechanism is done during boot up of the module, during module operation (if a new device inserted to the
network is trying to use the same IP) or after software reset (CIP object 0x01, Instance 1 Service 5).
If the module detects another device with the same IP address, it will:
- Defend its IP address
- If conflict is confirmed
o The module will release its IP address
o The display will show the message : IP CONFLICT
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