User Manual
Table Of Contents
- 1747-6.8, Direct Communication Module User Manual
- Important User Information
- Summary of Changes
- Table of Contents
- Preface
- 1 - Overview
- 2 - Quick Start for Experienced Users
- 3 - Addressing
- 4 - Module Configuration
- 5 - Installation and Wiring
- 6 - Programming
- 7 - Troubleshooting
- 8 - Application Examples
- A - Specifications
- B - DCM Addressing Worksheet
- Index
- Back Cover

Chapter 2
Quick Start for Experienced Users
2–2
1.
Check
the contents of the shipping box.
Reference
Unpack the module making sure that the contents include:
• Direct Communication Module (Catalog Number 1747-DCM)
• removable connector (factory-installed on module)
• cable tie
• user manual (Catalog Number 1747-NM007)
–
If the contents are incomplete, call your local Allen-Bradley representative for assistance.
2.
2.
Select
a scanner
.
Reference
To begin configuration of your RIO system, you should know three things:
• which scanner is compatible with your PLC/SLC controller. Use the table below to select a
scanner that is compatible with your processor. The DCM is compatible with all RIO
scanners.
The manual for
the scanner you
select
Catalog Number
Description
1747-SN
➀
SLC Remote I/O Scanner
1771-SN
➁
Sub I/O scanner for Mini–PLC-2r and PLC-5 families
1772-SD, -SD2
➂➃
Remote scanner/distribution panel for PLC-2 family
1775-S4A, -S4B, -S5
➀
I/O scanner-programmer interface module for PLC-3r family
1775-SR, -SR5
➀
Remote scanner/distribution panel for PLC-3/10 family
1785-L11B
➀
PLC 5/11t (in scanner mode)
1785-LT/x
➀➄
PLC 5/15 (in scanner mode)
1785-L20B
➀
PLC 5/20t (in scanner mode)
1785-LT2
➀➄
PLC 5/25 (in scanner mode)
1785-L30x
➀
PLC 5/30t (in scanner mode)
1785-L40x
➀
PLC 5/40t (in scanner mode)
1785-L60x
➀
PLC 5/60t (in scanner mode)
5250-RS
➀
Remote scanner for PLC 5/250
6008-SI
➀
IBMr PC I/O Scanner Module
6008-SV
➀
VMEbus I/O Scanner Module
6008-SQH1, -SQH2 Q-bus I/O Scanner Module
➀
Extended
node capability
.
➁
Revision D or later
.
➂
Rev
. 3 or later
.
➃
Extended node capability not available with Series A.
➄
Rev.
3 or later
.PLC 5/15 Series B Revision H or later have partial rack addressing. Earlier versions are limited to 3 devices.
PLC 5/25 Series A Revision D or later have partial rack addressing. Earlier versions are limited to 7 devices.
Procedures