Rockwell Automation 1771-DB BASIC MODULE User Manual
Page 341
Product Overview
Appendix A
A –9
DF1 Protocol Configuration
The BASIC module can use DF1 to control communications with a
modem. In this configuration, the BASIC module is interfaced with a
DH-485 network through a peer-to-peer communication interface with
full-duplex, DF1 protocol.
PLC
processor
with BASIC
module
Modem
Modem
1747-C11 cable
Link
Coupler
1747-AIC
Link
coupler
1747-AIC
Console device
DH-485
communication
cable
Belden #9842
Interface/Converter
RS-232 to RS-485
(1747-PIC)
1747-C13 cable
PLC
processor
with BASIC
module
SLC 500
controller
with
1747-KE
module
1747-C11 cable
Important: By configuring JW4 for DF1 communication on PRT2,
DH-485 communications are disabled.
ATTENTION: Do not place the BASIC module on an active
DH-485 network until the node address and communication rate
of the BASIC module are configured.
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