Siemens SIPROTEC 7SJ61 - 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)

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