GD9924BE V2 HIEE401091R0002 module

Defines the parity to be used with the Modbus communication. This parameter also defines the number of stop bits in use. Typically with Modbus communication the number of stop bits is 2 with no parity bit, and 1 with even or odd parity. There are four selections: EVEN, ODD, NONE 1 S.BIT and NONE 2 S.BIT.This diagnostics counter increases by one every time a valid Modbus message has been received by NMBA-01 Module. This counter will roll over from 32767 back to 0. During normal operation, this counter is increasing constantly. BAD MESSAGES This diagnostics counter increases by one every time the NMBA-01 Module finds any kind of communication error. This counter will roll over from 32767 back to 0. During normal operation, this counter hardly ever increases.

DDCS CHANNEL

 Selects the DDCS CHANNEL of the drive to which the fibre optics are connected. This parameter is only used with ACS 600. Note: The changes to the parameters do not take effect immediately. To change the module settings, the power must be disconnected from the NMBA-01.This chapter describes the Modbus communication with the drive.

Control Locations 

ABB drives can receive control information from multiple sources including digital inputs, analogue inputs, the drive control panel and a communication module (e.g. NMBA-01). ABB drives allow the user to separately determine the source for each type of control information (Start, Stop, Direction, Reference, Fault Reset, etc.). In order to give the fieldbus master station the most complete control over the drive, the communication module must be selected as source for this information. See the user documentation of the drive for information on the selection parameters.