A–4 Setting Up the DH-485 Network
Publication
1747-6.2
The isolated link coupler (1747-AIC) is used to connect SLC 500
family devices to the DH-485 network (as shown on page A–5).
The coupler provides a 6-position removable terminal block for
connection to the DH-485 communication cable.
Network connections for SLC 500 processors are provided by the
Catalog Number 1747-C11, 304.8 mm (12 in.) cable supplied with
the link coupler. Network connections for peripheral devices, such
as the Personal Interface Converter (1747-PIC), Data Table Access
Module (1747-DTAM-E), or Hand-Held Terminal (1747-PT1) are
provided by the standard Catalog Number 1747-C10 1.8 m (6 ft)
cable supplied with each of those devices. If you need to connect a
peripheral device that is between 1.8 m (6 ft) and 6.1 m (20 ft) away,
use the 1747-C20 cable.
To protect connected devices, the coupler provides 1500V dc
isolation between the communications cable and the attached SLC
500 controller and peripheral devices (PIC, DTAM, or HHT).
The isolated link coupler can also be used to provide connectivity
between a peripheral device (programming software and PIC, HHT,
or DTAM) for distances greater than 1.8 m (6 ft) up to a maximum
of 1219 m (4000 ft). Below is an example of a “remote” connection
between a computer running your programming software and an
SLC 500 processor.
PIC
>1.8 m (6 ft)
+24VDC
Programming
Software
1747-AIC 1747-AIC
1747-C11
1747-C10
Data
Table
Access Module
1747-C20
6.1m (20 ft)
1747-PIC
1747-DTAM-E
1747-AIC Isolated Link
Coupler for DH-485