Installation manual
Publication 1747-RM001G-EN-P - November 2008
SLC Passthru Communications 14-11
Using RSLinx Classic, version 2.50 and higher, with SLC 5/05 
Passthru
RSLinx Classic, version 2.42 and below, only supports DF1 Full-duplex to 
Ethernet, DF1 Half-duplex Master to Ethernet, DH-485 to Ethernet, 
Ethernet to DF1 Full-duplex, and Ethernet to DH-485 passthru. RSLinx 
Classic, version 2.43 supports all modes of channel-to-channel passthru 
described below, except when channel 0 control line handshaking is enabled. 
RSLinx Classic, version 2.50 and higher supports all modes of 
channel-to-channel passthru as described below.
When channel 0 is configured for DF1 Full-duplex and S:34/5=1, the SLC 
5/05 passthru processor can be used by RSLinx to go online through channel 
0 to the channel 1 Ethernet network. Each Ethernet device that RSLinx 
browses uses up an outgoing SLC 5/05 connection. See Table 12.3 to 
determine how many available outgoing connections the SLC 5/05 has 
available. The RSLinx RS-232 DF1 driver is used, with Device configured for 
either 1770-KF3/1747-KE, which allows browsing of Ethernet devices from a 
block of entries within the range of 1 to 31 in the Passthru Routing Table, or 
for 1770-KF2/1785-KE, which allows browsing of Ethernet devices from a 
block of entries within the range of 1 to 77 octal (1 to 63 decimal). The size of 
the block of entries must not exceed the number of available outgoing 
connections. The passthru processor will show up on the RSWho browse at 
node 0. You should configure the properties of the DF1 network within 
RSWho to browse the specific range of addresses that are being used in the 
passthru routing table. 
When channel 0 is configured for DF1 Half-duplex Master and S:34/5=1, the 
SLC 5/05 passthru processor can be used by RSLinx to go online through 
channel 0 to the channel 1 Ethernet network. The RSLinx DF1 Slave driver is 
used. The SLC 5/05 passthru processor channel 0 configuration must be set 
up in Standard Polling Mode, and the slave address of RSLinx must be 
included in the polling range. The DF1 Slave driver properties in RSWho must 
be modified to poll for a block of entries within the range of 129 to 254 (the 
valid 5/05 passthru range of addresses, which is 128 plus the Passthru Routing 
Table entry numbers of 1 to 126). The size of the block of entries must not 
IMPORTANT
Only Ethernet devices that support Client Server 
Protocol (CSP), such as SLC 5/05 processors, PLC-5 
processors, PLC-5 Ethernet sidecars (1785-ENET), 
and RSLinx software, can use SLC 5/05 passthru. 
Passthru does not work with Ethernet devices 
supporting only EtherNet/IP protocol.










