Pro-face SP5000 Series Error Code ERR-207

Pro-face HMI Major Communication

Model: SP5000 Series | Code: ERR-207

Applicable Systems

GP4000 Series

Symptoms

Ethernet/IP implicit I/O connection times out repeatedly with error code 0x0204.

RPI (Requested Packet Interval) set too aggressively for the network load.
EtherNet/IP scanner class conflict due to another master owning the connection.
Network switch QoS not prioritizing Class 1 implicit traffic over best-effort data.

Step 1: Increase the RPI from 10 ms to 50 ms in the GP-Pro EX Ethernet/IP driver settings.
Connection stabilizes and no timeout errors occur for 1 hour.
Step 2: Use RSWho or similar scanner to verify no other PLC or HMI owns the connection.
Only one ownership entry is present for the target adapter.
Step 3: Enable IGMP snooping and DSCP prioritization (EF/AF) on the managed switch.
Packet capture shows Class 1 traffic is forwarded with highest priority and <1% loss.

Adjust RPI to a conservative value, resolve ownership conflicts, and enable industrial Ethernet QoS.

Source: Pro-face SP5000 Series EtherNet/IP Application Note

Category: HMI