Rockwell Automation 1775-S4B,D17756.5.3 User Manual SCANNER/MSG HND - Manual (Page 13)

I/O ScannerĆMessage Handling Module
Chapter 2
2Ć4
Now that you are aware of the 1775-S4B scanner’s hardware components,
this section summarizes the basic features and functions of the I/O
scanner-message handling module:
Features Functions
Four I/O communication
channels
To communicate with I/O Adapter Modules (cat. no. 1771ĆAS) in
I/O chassis. You can connect up to 16 I/O chassis to one
1775ĆS4B scanner I/O channel. The 1775ĆS4B scanner can
communicate with 2,048 inputs and 2,048 outputs per scanner
total.
Report generation channel To communicate with an RSĆ232ĆC compatible data terminal for
report generation. You can execute messages from your data
terminal or from a MSG instruction in the ladder diagram
program.
Status indicators To keep you informed on the 1775ĆS4B scanner's status. These
LEDs indicate the general module status and the active state of
each I/O communication channel.
Thumbwheel switch To distinguish one 1775ĆS4B scanner from another. You can
insert up to 15 1775ĆS4B scanners in one PLCĆ3 system.
Terminal swing arm To easily connect bulletin 1771 I/O chassis to the 1775ĆS4B
scanner. The terminal swing arm disconnects so you can easily
attach Twinaxial Cable (cat. no. 1770ĆCD). An I/O chassis can
connect to a 1775ĆS4B scanner up to 10,000 cable feet away.
Location
Single slot in a PLC-3 processor chassis
Functions
I/O interface
Report generation
I/O Capacity
2,048 inputs and 2,048 outputs
Channels Per Module
4 I/O communication
1 RS-232-C communication
Communication Rate
57.6 baud or 115.2 kbaud (I/O channel)
110 to 19.2 kbaud (RS-232-C channel)
2.2
1775ĆS4B Scanner
Features and Functions
2.3
Specifications