Yokogawa Button Operated MV2000 - Manual (Page 157)

7-4 M-4662
• Reading Values into External Input Channels (RD-MV2000 only)
• External input channels are an RD-MV2000 option (/MC1).
• Reads values from the server register into the MV external input channels.
• The data type of external input channels is 16-bit signed integer.
• The measurement range and unit are set on the external input channels. The
decimal place is determined by the external input channel’s span lower settings.
Register
Server
Data type
Read
R
MV2000
30001 to 39999
300001 to 365536
40001 to 49999
400001 to 465536
INT 16, UINT 16,
INT 32_B, INT 32_L,
UINT 32_B, UINT 32_L,
External Input data
Number: 201 to 440
Data type: 16-bit signed integer
Access
method
External Input Channel Values
The range of external input channel values is –30000 to 30000 after removing the
decimal. If a value is outside this range, the value is set to positive or negative range-
out.
Server Register Value External Input Channel Value
Greater than 30000 Positive range-out (7FFFH)
–30000 to 30000 –30000 to 30000
Less than –30000 Negative range-out (8001H)
• Reading Values into Communication Input Channels
• Reads values from the server register into the MV communication input channels.
• Communication input data is an option (/M1 or /PM1).
• The data type of communication input data is 32-bit floating point.
• Communication input data can be displayed on a computation channel by writing
an expression that contains the data in an MV computation channel (/M1 or /PM1
option). The measurement range and unit are also set on a computation channel.
Register
Server
Data type
Read
R-M
MV1000 and MV2000
30001 to 39999
300001 to 365536
40001 to 49999
400001 to 465536
INT 16, UINT 16,
INT 32_B, INT 32_L,
UINT 32_B, UINT 32_L,
FLOAT_B, FLOAT_L
Communication input data
Number: C01 to C24 (MV1000)
C01 to C60 (MV2000)
Data type: 32-bit floating point
Access
method
• Writing Measured Values of Measurement Channels
• Writes measured values of measurement channels to server registers.
• The data type of measured values is 16-bit signed integer.
Access
method
Register
Server
Data type
W
40001 to 49999
400001 to 465536
INT 16, UINT 16,
FLOAT_B, FLOAT_L
Measurement channel
Number: 001 to 024 (MV1000)
001 to 048 (MV2000)
Data type: 16-bit signed integer
MV1000 and MV2000
Write
7.3 Modbus Protocol Specifications