Yokogawa Standalone MW100 - Manual (Page 235)

5-22 IM MW100-01E
Command settings: Up to 100 commands can be set.
Command items:
Loading channels: C001 toC300
Writing channels: 001 to 060, A001 to A300, C001 to C300
Address: 1 to 247
Input registers: 30001 to 39999, 300001 to 365535
Hold registers: 40001 to 49999, 400001 to 465535
Type:
Type Description
Int 16 Signed 16-bit integer
Uint 16 Unsigned 16-bit integer
Int 32 - Big Signed 32-bit integer (from upper to lower. )
Int 32 - Little Signed 32-bit integer (from lower to upper. )
Uint 32 - Big Unsigned 32-bit integer (from upper to lower. )
Uint 32 - Little Unsigned 32-bit integer (from lower to upper)
Float - Big
32-bit floating decimal (from upper to lower. )
Float - Little 32-bit floating decimal (from lower to upper)
If the type is Int 16 or Uint 16, the maximum number of channels that can
be specified for read/write channels is 127. For other types, the maximum is
63.
Bit data values output by Modbus client/master when the command type is set to “Write”
in the Modbus client/master settings, see the followings:
• Values per Modbus Registers (Measurement channel data and MATH channel
data)(page 5-25)
• Values per Modbus Registers (Communication input channel data)(page 5-26)
Modbus Slave Function
Supported function: The functions that the MW100 supports are as follows.
Function Code Function Operation
1 * Read statuses of coils (0xxxx) Reads statuses of a series of coils.
2 * Read statuses of input relays (1xxxx) Reads statuses of a series of input
relays.
3 Read values of hold registers (4xxxx) Reads values of a series of hold
registers.
4 Read values of Input registers (3xxxx) Reads values of a series of input
registers.
5 * Turn status of a single coil (0xxxx) Turns status of a single coil.
6 Write a value to a single hold register
(4xxxx)
Writes a value to a hold register.
8 Loop back test Returns the same message as the
command message.
15 * Turn statuses of coils (0xxxx) Turns statuses of a series of coils.
16 Write values to hold registers (4xxxx) Writes values to a series of hold
registers.
* Firmware version R3.03 or later
5.2 Main Module (MW100-E) Specifications