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Description
Allen Bradley
I/O Scanner Modules
(Cat. No. 1775-S4A, -S4B)
Product Data
The I/O scanner modules provide I/O and RS-232-C communication
channels for the PLC-3 programmable controller. The two scanner modules
are:
I/O Scanner-Programmer Interface Module (cat. no.1775-S4A
I/O Scanner-Message Handling Module (cat. no. 1775-S4B)
Table
A
outlines the benefits, features, and functions for these modules.
Product Data
I/O Scanner Modules
1
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Table of Contents
Related Manuals for Allen-Bradley 1775-S4A
Summary of Contents for Allen-Bradley 1775-S4A
- Page 1 The I/O scanner modules provide I/O and RS-232-C communication channels for the PLC-3 programmable controller. The two scanner modules are: I/O Scanner-Programmer Interface Module (cat. no.1775-S4A I/O Scanner-Message Handling Module (cat. no. 1775-S4B) Table outlines the benefits, features, and functions for these modules.
- Page 2 Product Data I/O Scanner Modules Table A Benefits, Features, and Functions of the PLC 3 Scanner Modules Benefits Features Functions High speed I/O communication with up to 2,048 Four I/O communication channels Communicate with I/O Adapter Modules (cat no inputs and 2,048 outputs per scanner 1771 AS) in I/O chassis You can connect up to 16 I/O chassis to one I/O channel on the scanner...
- Page 3 1775-6.5.3, formerly 1775-806) Using the 1775 S4A Scanner The 1775-S4A scanner is a required module for the PLC-3 programmable controller. When you are setting up your PLC-3 system, you must insert a 1775-S4A scanner into the PLC-3 Main Processor Chassis (cat. no.
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Page 4: Programming Interface
C interface to a printer The number one 1775-S4A scanner supports operation of channel 0 on the PLC-3 front panel. If you are using channel 5 on the number one 1775-S4A scanner, you must make I/O channel 4 inactive through the PLC-3 LIST function. -
Page 5: Backup Communication
Through LIST selections for the 1775-S4A scanner, you can configure an I/O channel for peer-to-peer communication. In this function, you connect the I/O channel of a 1775-S4A scanner in one PLC-3 processor to the same channel of a 1775-S4A scanner in each of up to 6 PLC-3 processors. You must designate one PLC-3 processor as the master of this communication channel. - Page 6 The 1775-S4B scanner has terminals for four separate I/O communication channels. You can use these channels for I/O scanning the same as the 1775-S4A scanner. Looking at the PLC 3 Scanner Both scanner modules have the following hardware components (figure 1):...
- Page 7 The thumbwheel switch is below the self-test indicators. Setting it at a unique number (1 to 15) enables the PLC-3 processor to distinguish one scanner from another. That is, a 1775-S4A scanner and a 1775-S4B scanner in the PLC-3 processor chassis can be set at the same number.
- Page 8 Each LED corresponds to one of the four I/O communication channels. Depending on your use for the I/O communication channel, each indicator has the following meanings: If you are using the channel for I/O scanning with a 1775-S4A or 1775-S4B scanner: If the LED is:...
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Page 9: Electrostatic Discharge
PLC-3 system if you are using a 1775-S4A scanner an RS-232-C compatible device for report generation if you are using a 1775-S4B scanner To use channel 5 on 1775-S4A scanner number one, you must make I/O channel 4 inactive through the PLC-3 LIST function. Terminal Arm Swing Near the bottom of the scanner module is a Terminal Swing Arm (cat. -
Page 10: Specifications
5 to 95% (without condensation) As a subsidiary of Rockwell International, one of the world’s largest technology companies — Allen-Bradley meets today’s challenges of industrial automation with over 85 years of practical plant-floor experience. More than 11,000 employees throughout the...
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