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Appendix 3 Modbus RTU communication function code table
Functional
address
meaning
Register attribute
4x0000
Parameter: P01
4 bytes, signed,
read/write
4x0002
Parameter: P02
4 bytes, signed,
read/write
……
4x0176
Parameter: P89
4 bytes, signed,
read/write
4x0178
Parameter: p90 (gross weight of scale
No.2)
4 bytes, signed,
read-only
4x0180
Parameter: p91 (net weight of scale No.2)
4 bytes, signed,
read-only
4x0182
Parameter: p92 (tare weight of scale No.2)
4 bytes, signed,
read/write
4x0184
Parameter: P93
4 bytes, signed,
read/write
4x0186
Parameter: P94 (pulse port count value)
4 bytes, signed,
read/write
4x0188
Parameter: p95 (No.1 4-20mA output value)
4 bytes, signed,
read-only
4x0190
Parameter: p96 (No.2 4-20mA output value)
4 bytes, signed,
read-only
4x0192
Parameter: P97(4-20mA input value)
4 bytes, signed,
read-only
4x0194
Parameter: P98
4 bytes, signed,
read/write
4x0196
Parameter: P99
4 bytes, signed,
read/write
4x0198
Bit 1
Output relay OUT1 status
2 bytes, unsigned,
read-only
Bit 2
Output relay OUT2 status
…
…
Bit 16
Output relay OUT16 status
4x0199
Bit 1
Enter IN1 status
2 bytes, unsigned,
read-only
Bit 2
Enter IN2 status
…
…
Bit 12
Enter IN12 status
Bit 13
Output relay OUT17 status
Bit 14
Output relay OUT18 status