Rockwell Automation 1747-L55x,D174710.4 SLC 500 Ethernet - Manual (Page 58)

5–14 Using RS232-to-Ethernet
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Channel-to-Channel Passthru
Publication 1747-10.4
SLC 5/05 #1 Bridge
Ladder logic is not required for the SLC 5/05 which acts as a bridge
from DH485-to-Ethernet. However, you must set up a passthru
routing table file when configuring the bridge. The channel
configuration is shown below, along with the routing table.
SLC 5/05 #1 Bridge Channel Configuration