Product data

Publication 1785-SG001B-EN-P - June 2006
Select Network Communications 27
The PLC BASIC Module occupies one slot in the 1771 I/O chassis and runs
user-written BASIC and C programs. These programs are independent of your
PLC-5 controller and provide an easy and fast interface between a PLC-5
controller, 1771 backplane, and RS-232, -422, or -485 devices. The module can
also communicate with a remote SLC controller or remote device on the
DH-485 network through a DH-485 port.
The communication controller modules, 1771-KE and 1771-KF, link
intelligent RS-232-C devices to Data Highway. Both of these modules provide
a choice of two protocols on the RS-232-C link - full-duplex and half-duplex.
These modules perform the same functions, however their mounting styles
and power supply requirements are different.
Cat. No. Function Comm.
Rate
Connections Design Considerations Cable Power
Dissipation,
Max
Backplane
Current
Load
1771-DB Provides an interface
between a PLC-5
controller, 1771
backplane, and RS-232,
-422, or -485 devices
Configurable,
depending on
serial protocol
• 2 ports for RS-232,
-422, or -485
• 1 port for DH-485
Place in the local I/O
chassis
• Data
Highway
1770-CD
• RS-232
1770-CG
or Modem
Interface
Cable
1770-CP
4 W 0.75 A (with
1747-PIC)
0.65 A
Cat. No. Function Comm.
Rate
Connections Design Considerations Cable Power
Dissipation,
Max
Backplane
Current
Load
1771-KE Provides an interface
between RS-232-C
devices and Data
Highway link with both
full-duplex and
half-duplex protocols
• Data
Highway -
57 Kbps
• RS-232-C
from 110 to
19 Kbps
Data Highway,
RS-232
Place in the local I/O
chassis. Power source is
the 1771 I/O chassis
power supply.
• Data Highway
1770-CD
• RS-232
1770-CG or
Modem
Interface Cable
1770-CP
6.3 W 1.2 A
1771-KF Provides an interface
between RS-232-C
devices and Data
Highway link with both
full-duplex and
half-duplex protocols
• Data
Highway -
57 Kbps
• RS-232-C
from 110 to
19 Kbps
Data Highway,
RS-232
Includes mounting
bracket for external
mounting or in a standard
industrial enclosure
(NEMA Type 12 or
similar). Power source is
user-supplied (1771-P2 or
similar).
• Data Highway
1770-CD
• RS-232
1770-CG or
Modem
Interface Cable
1770-CP
6.3 W 1.2 A