ProSoft Technology MVI56-AFC - Manual (Page 209)

MVI56-AFC ♦ ControlLogix Platform MVI56-AFC Sample Logic
Liquid and Gas Flow Computer User Manual
ProSoft Technology, Inc. Page 209 of 316
February 25, 2011
12.1.2 Modbus Gateway Block (uses Transaction Numbers from 17 to
25)
Each Modbus Gateway block has the following structure:
Controller Tag Begin Controller Tag End Description
AFC56.outputbuffer[0] Transaction Number [y]
AFC56.outputbuffer[1] Block Length (see note)
AFC56.outputbuffer[2] Modbus Gateway BOD
AFC56.outputbuffer[3] Start Register
AFC56.outputbuffer[4] Register Count
AFC56.outputbuffer[5] AFC56.outputbuffer[204] Reserved for Modbus Gateway
AFC56.outputbuffer[205] AFC56.outputbuffer[246] Not Used
AFC56.outputbuffer[247] Transaction Number [y]
Note: The block length will depend on the Register Count parameter you entered.
12.1.3 Wallclock Block (uses Transaction Number =99)
The wallclock block has the following structure:
Controller Tag Begin Controller Tag End Description
AFC56.outputbuffer[0] Transaction Number = 99
AFC56.outputbuffer[1] Block Length = 7
AFC56.outputbuffer[2] Wallclock BOD
AFC56.outputbuffer[3] Year
AFC56.outputbuffer[4] Month
AFC56.outputbuffer[5] Day
AFC56.outputbuffer[6] Hour
AFC56.outputbuffer[7] Minute
AFC56.outputbuffer[8] Seconds
AFC56.outputbuffer[9] Transaction Number = 99