5–3
Using RS232-to-Ethernet

Channel-to-Channel Passthru
Publication
1747-10.4
The IP Addresses used in the following illustrations are for example
purposes only. Contact your system administrator for IP addresses
unique to your network.
Example 1: DF1-to-Ethernet and Ethernet-to-DF1
In the following diagram, the SLC 5/03 sends a local message via
DF1 to the SLC 5/05 #1. The SLC 5/05 #1 acts as a bridge, sending
the message out via Ethernet to the SLC 5/05 #2, whose address is
stored in the routing table. SLC 5/05 #2 can also initiate a message
via Ethernet to the SLC5/03 processor through SLC 5/05 #1. The
SLC 5/05 #1 routes the message to SLC 5/03 via DF1.
Important: In the SLC 5/05 #1 bridge, Status File Bit S:34/5 must
be set to 1 to enable DF1-to-Ethernet passthru. Set
Status File Bit S:34/0 to 1 to disable DH485-to-Ethernet
passthru.
SLC 5/03
DF1 Source ID = 1
SLC 5/05 #1 Bridge
IP Address 130.151.81.104
DF1 Source ID = 0
SLC 5/05 #2
IP Address 130.151.81.139
Ethernet
Ethernet Port
DH485 Node 1
DF1
Ethernet Hub
1747-PIC
Interface
Converter
RS232 Port
Personal Computer
with
RSLinx and RSLogix 500
Passthru Examples
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