Yokogawa Button Operated MV2000 - Manual (Page 159)

7-5
IM MV1000-17E
Specifications
1
2
3
4
5
6
7
App
Index
Specified Data Type and Write Operation
The MV writes the measured values of measurement channels according to the
specified data type as follows:
Specified Type Measured Value Value Written
INT16 Writes all values directly.
FLOAT_L
FLOAT_B
+Over * 7f800000H(+∞)
-Over * ff800000H(-∞)
Skip * ff800002H(Nan)
Error * ff800004H(Nan)
Undefined data * ff800005H(Nan)
Burnout(Up) * 7f800006H(Nan)
Burnout(Down) * ff800006H(Nan)
Other values Writes the value including the decimal
place in FLOAT data type.
* For details on values, see section 5.3, “Binary Data Output Format.”
• Writing Computed Values of Computation Channels
• The computation function is an option (/M1 or /PM1).
• Writes computed values of computation channels to server registers.
• The data type of computed values is 32-bit signed integer.
W-M
40001 to 49999
400001 to 465536
INT 16, UINT 16,
INT 32_B, INT 32_L,
FLOAT_B, FLOAT_L
Computation channel
Number: 101 to 124 (MV1000)
101 to 160 (MV2000)
Data type: 32-bit signed integer
Register
Server
Data type Access
method
MV1000 and MV2000
Write
Specified Data Type and Write Operation
The MV writes the computed values of computation channels according to the
specified data type as follows:
Specified Type Computed Value Value Written
INT16
Less than –32768 –32768
Greater than 32767 32767
+Over * 32767
-Over *
Skip *
Error *
–32768
Other values Writes the value in INT16 data format.
UINT16
Less than 0 0
Greater than 65535 65535
+Over * 65535
-Over *
Skip *
Error *
0
Other values Writes the value in UINT16 data
format.
INT32_L
INT32_B
Writes all values directly.
FLOAT_L
FLOAT_B
+Over * 7f800000H(+∞)
-Over * ff800000H(-∞)
Skip * ff800002H(Nan)
Error * ff800004H(Nan)
Other values Writes the value including the decimal
place in FLOAT data type.
* For details on values, see section 5.3, “Binary Data Output Format.”
7.3 Modbus Protocol Specifications