Automationdirect.com HX-ECOM Series - ECOM Settings> Configuration> Advanced

Ethernet Communications Modules, 3rd Edition, Rev. D
3–9
Chapter 3: Configuring ECOMs Using NetEdit3
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ECOM Settings> Configuration> Advanced
Clicking the Advanced button in the ECOM
Settings>Configuration box brings up the ECOM Advanced
Settings window below.
RX/WX - Settings box in this window provides a place to
make changes that affect PLC-to-PLC communications.
ACK Timeout - sets the time limit for receiving
the acknowledge (ACK) response to an RX or WX
instruction. The ECOM sends a message across the
LAN. The acknowledge response comes back directly
from the ECOM module receiving the transmission.
This timeout is the maximum for transmission and
acknowledgement from ECOM to ECOM across the
LAN. It is not dependent on the PLC scan time.
Resp. Timeout - sets the maximum time for the receiving
PLC CPU to respond to the ECOM that initiated the
communication. The instruction has travelled from the
initiating PLC CPU to the initiating ECOM, across
the Ethernet LAN to the receiving ECOM, then to the
receiving PLC CPU, and back again to the initiating ECOM. Multiple PLC scans may be
required to execute an RX/WX instruction so the Resp. Timeout should allow for multiple
scans. Also, communication errors may result in retries which require more time. Your response
timeout setting must accommodate retries as well.
The WX/RX Retries field shows the number of times the ECOM will retry transmissions to
the network.
The K- Sequence Retries field shows the number of times the backplane transmission between
ECOM and CPU is to be retried.
The OK button loads the communication settings in the ECOM module’s flash memory.