Technical data

Chapter 4 – Communication
4-8 RS485 and RS232 Adapter Installation and Start-up Guide
References
References are 16-bit words comprising a sign bit and a 15-bit integer. A
negative reference (indicating reversed direction of rotation) is formed by
calculating the two’s complement from the corresponding positive reference
value.
Reference 1
Holding Register: 40002
Reference 1 can be used as the frequency reference
REF1 for the ACS 160.
The signal source of external reference 1 (
REF1) must be set to COMM and
external control location 1 (
EXT1) must be activated. Refer to parameters 1103
EXT REF 1 SELECT and 1102 EXT1/EXT2 SEL.
Reference 2
Holding Register: 40003
Reference 2 can be used as the frequency reference
REF2 for the ACS 160.
The signal source of external reference 2
REF2 must be set to COMM and
External control location 2 (
EXT2) must be activated. Refer to parameters 1106
EXT REF 2 SELECT and 1102 EXT1/EXT2 SEL.