User manual

Connecting the Interface Card 4-11
1784-6.5.27 - September 1997
Terminating the Last Node
You must terminate both ends of your DH+ network. If the PKTx is the last
physical node on your network, you must set the switch on the CP12 or 13
to terminate the link as shown below.
Connecting the Card to a Data Highway Plus Network
To connect the 1784-PKTX or -PKTXD card to a Data Highway Plus
network, use Allen-Bradley 1770-CD or approved cable to construct
custom cable. (See publication ICCG-2.2, Approved Vendor List for DH,
DH+, DH-485, and Remote I/O)
Important: You must terminate the last physical node of the network with
a resistor of appropriate value.
!
ATTENTION: Not all software and hardware
supports 115.2K bit/s or 230.4K bit/s for DH+
communications. Make sure your software and
hardware supports the baud rate you select.
20223c-M
3-pin Phoenix connector with
switchable termination resistor
node terminated
node not terminated
20223c