ProSoft Technology MVI56-AFC - Manual (Page 8)

Contents MVI56-AFC ♦ ControlLogix Platform
User Manual Liquid and Gas Flow Computer
Page 8 of 316 ProSoft Technology, Inc.
February 25, 2011
11.2.1 Function Block Structure ....................................................................................... 168
11.2.2 Function Block Definition - 0: Null ......................................................................... 171
11.2.3 Function Block Definition - 1: Wall Clock .............................................................. 172
11.2.4 Function Block Definition - 4, 5, 6 & 7: Modbus Pass Through ............................ 173
11.2.5 Function Block Definition - 8: Meter Process Variables........................................ 175
11.2.6 Function Block Definition - 9: Meter Analysis, 16-bit ............................................ 184
11.2.7 Function Block Definition - 10: Meter Type Fetch ................................................. 186
11.2.8 Function Block Definition - 11: Meter Analysis, 32-bit .......................................... 187
11.2.9 Function Block Definition - 12: Site/Meter Signals ................................................ 190
11.2.10 Function Block Definition - 14: Meter Archive Fetch............................................. 192
11.2.11 Function Block Definition - 16/17/18/19: Modbus Gateway Read ........................ 193
11.2.12 Function Block Definition - 20, 21: Modbus Gateway Write ................................. 196
11.2.13 Function Block Definition - 24, 25, 26: Modbus Master ........................................ 199
11.2.14 Function Block Definition - 28, 29: Disable/Enable Meters .................................. 203
12 MVI56-AFC Sample Logic 205
12.1 Sample Logic Overview ........................................................................................ 206
12.1.1 Process Block (uses Transaction Numbers from 1 to 16) .................................... 208
12.1.2 Modbus Gateway Block (uses Transaction Numbers from 17 to 25) ................... 209
12.1.3 Wallclock Block (uses Transaction Number =99) ................................................. 209
12.1.4 Sample MVI56-AFC Logic Tasks.......................................................................... 210
12.2 Using the Sample Add-On Instruction .................................................................. 211
12.2.1 Import Procedure .................................................................................................. 211
12.3 ControlLogix Sample Logic Details ....................................................................... 220
12.3.1 Enable/Disable Status .......................................................................................... 220
12.3.2 Disable Meter ........................................................................................................ 220
12.3.3 Enable Meter......................................................................................................... 221
12.3.4 Wallclock ............................................................................................................... 222
12.3.5 Meter Profile .......................................................................................................... 223
12.3.6 Meter Process Variables ....................................................................................... 224
12.3.7 Meter Calculation Results ..................................................................................... 227
12.3.8 Meter Signals ........................................................................................................ 229
12.3.9 Molar Analysis (For Gas Product Only) ................................................................ 231
12.3.10 Set the Processor Time ........................................................................................ 236
12.3.11 Checking Meter Alarms ........................................................................................ 237
12.3.12 Site Status ............................................................................................................. 239
12.3.13 Modbus Master ..................................................................................................... 239
12.3.14 Modbus pass-through ........................................................................................... 244
12.3.15 Modbus Gateway .................................................................................................. 245
13 Diagnostics and Troubleshooting 255
13.1 User LEDs ............................................................................................................. 256
13.1.1 App Status LED .................................................................................................... 256
13.1.2 BP Act and P1, P2, or P3 ..................................................................................... 256
13.2 BBRAM LEDs ....................................................................................................... 257
13.3 Meter Alarms ......................................................................................................... 258
13.4 Checksum Alarms ................................................................................................. 262
13.5 Events ................................................................................................................... 263
13.6 Audit Scan ............................................................................................................. 264