Measured Value (Signed Integer); Metered Measurand (Unsigned Long); Figure 5-3 Data Type Measured Value (Signed Integer); Figure 5-4 Data Type Metered Measurand (Unsigned Integer) - Siemens SIPROTEC 7SJ61 Technical Data Manual

5.3

Measured value (signed integer)

S
...
Figure 5-3 Data type measured value (signed integer)
Meaning of the status bits:
S - Sign bit, active: negative measured value (two's complement)
5.4

Metered measurand (unsigned long)

E
...
Byte 3 (MSB)
Figure 5-4 Data type metered measurand (unsigned integer)
Meaning of the status bits:
E - Error bit, active: invalid metered measurand
7SJ61/62/63 6MD63 - Modbus
C53000-L1840-C001-01
Double commands are exclusively controled using Modbus
function „Force Multiple Coils" (ref. to chap. 2).
Range of values:
-32768 to +32767
(-32768 = overflow or invalid)
Measured value
Byte 1 (MSB)
Input / holding register xxxx
Range of values:
0 to +4294967295
Metered measurand
Byte 2
Holding register xxxx
Data type definitions
Byte 0 (LSB)
Byte 1 Byte 0 (LSB)
Holding register xxxx+1
...
...
5-3