MVI69E-AFC ♦ Version 4.04
Configuring Site Parameters
ProSoft Technology, Inc.
Page 39 of 145
December 18, 2018
Port Options
Option
Description
Modbus Master
Enables the Modbus Master for the port (Serial 2). The Modbus Master
command is generated from the processor using ladder logic (Modbus
master block). After the Modbus Master transaction is completed the
module is ready to receive another Modbus Master request from the
ladder logic:
Modbus Slave
MVI-AFC
Processor
Modbus
Master
Block
Modbus
Command
The following Modbus functions are support for Modbus Master operation:
Modbus Function Code
Description
1
Read Coil Status
2
Read Input Status
3
Read Holding Registers
4
Read Input Registers
15
Force (Write) Multiple Coils
16
Preset (Write) Multiple Registers
The module offers flexibility for Modbus Master operation, allowing ladder
logic to select one of the following data types:
Bit (packed 16 to a word)
Word (16-bit register)
Long (32-bit items as register pairs)
Long Remote (32-bit items as single registers)
Note:
Long data type implements each data unit as one pair of 16-bit
registers (words). Each register contains two bytes. Long remote data
type implements each data unit as one 32-bit register. Each register
contains four
bytes. The proper choice depends on the remote slave’s
Modbus implementation.
Hide Primary Slave
When checked, protects the Primary Modbus Slave from any read or write
command from a Modbus master device. In this case, you could also
remap the register from the Primary Slave to the Virtual Slave protecting
each register from write commands (refer to the Primary & Virtual Modbus
Slaves Configuration section).
Swap Modbus Words
If checked, the words transferred by a Modbus master device will be
swapped. This setting only applies to double-register data items (floating
point and long integer).
Summary of Contents for MVI69E-AFC
Page 8: ......
Page 20: ......
Page 44: ......
Page 76: ......
Page 80: ......
Page 88: ......
Page 92: ......
Page 94: ...Density Units MVI69E AFC Version 4 04 Page 94 of 145 ProSoft Technology Inc December 18 2018...
Page 96: ......
Page 102: ......
Page 104: ......
Page 108: ......
Page 138: ......
Page 140: ...What s Next MVI69E AFC 4 04 Page 140 of 145 ProSoft Technology Inc December 18 2018...
Page 144: ......