Rockwell Automation 2706-P42_P43_P44_P72_P74_P92_P94 InView Marquee Message Display User Manual - Manual (Page 7)

Publication 2706-UM016D-EN-P - March 2006
Table of Contents iii
Mode of Transmission . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
InView Display Memory Map . . . . . . . . . . . . . . . . . . . . 4-12
Methods of Transmission . . . . . . . . . . . . . . . . . . . . . . . 4-13
Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Longitudinal Redundancy Check (LRC) Error
Detection and Calculation . . . . . . . . . . . . . . . . . . . . . . 4-16
Examples of Modbus ASCII Functions . . . . . . . . . . . . . . . . 4-17
Heartbeat Function . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Clear the Display Memory . . . . . . . . . . . . . . . . . . . . . . 4-20
Clear the Message Queue using Modbus ASCII
in Broadcast Mode (Recommended) . . . . . . . . . . . . . . . 4-20
Clear the Message Queue using Modbus ASCII in
Guaranteed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Set Time in Broadcast Mode with AM/PM Format . . . . . 4-21
Set Time in Broadcast Mode with 24 Hour Format. . . . . 4-22
Set Day and Date in Broadcast Mode . . . . . . . . . . . . . . 4-23
Preview a Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Download Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Add/Remove a Message using a Modbus ASCII 10
Frame Query (Recommended) . . . . . . . . . . . . . . . . . . . 4-33
Add/Remove a Message using Modbus ASCII 10
Frame Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
Priority Messaging using a Modbus ASCII Query
(Recommended) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
Priority Messaging using a Modbus ASCII Transmission . 4-35
Update a Variable using a Modbus ASCII 06 Frame in
Broadcast Mode (Recommended) . . . . . . . . . . . . . . . . . 4-35
Update a Variable using a Modbus ASCII 06 Frame in
Guaranteed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Update Variables using a Modbus ASCII 10 frame
in Broadcast mode (Recommended) . . . . . . . . . . . . . . . 4-36
Update Variables using a Modbus ASCII 10 frame in
Guaranteed mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Read the Message Queue using a Modbus ASCII 03
frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
Read Variables in a Display using a Modbus ASCII 03
frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
Change the InView Display Address . . . . . . . . . . . . . . . 4-40
InView Display Communication Protocol Functions and
Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41
InView Message Format used within Modbus ASCII
Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41
Special Function Command . . . . . . . . . . . . . . . . . . . . . 4-45
Text Position Placement . . . . . . . . . . . . . . . . . . . . . . . . 4-51
ASCII Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
Reference Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52