Rockwell Automation 1785-LTx,D17856.2.1 Classic PLC-5 Programmable Controllers Users Manual User Manual

Page 70

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Choosing Communication

Chapter 5

5-12

Figure 5.10

Example DH+ to Data Highway to DH+ Link Configuration

17195

Data Highway

Remote DH+ link

1785ĆKA

PLCĆ5/10, Ć5/12, Ć5/15, Ć5/25

processor

Serial Connections

You can connect a programming terminal to a PLC-5/10, -5/12, -5/15, or
-5/25 processor through a serial port (COM1 or COM2) on the terminal
with one of the following communication modules:

1785-KE Series A or B Communication Interface Module

(resides in a 1771 I/O rack)

1770-KF2, Series B Communication Interface Module

(desktop unit as shown in Figure 5.12)

Important: The communication driver is interrupt-driven; the serial port
must support hardware interrupts. On most machines, COM1 and COM2
support these interrupts.