ABB M101 - Switching Commands - Bit Control; Table 29 Default Modbus Bit Command Registers; Table 30 Default Bit Map Control Commands Low Byte

DEFAULT DATA MAP DATA MAPPING
56 1TGC908004M0201
9.2.7. Switching Commands – Bit Control
The bit control command gives the possibility to control a starter by setting of a single bit. (In
addition to control a starter by command codes as described in previous chapter.)
16 single command bits are located in one Modbus word register. More than one bit can set
at simultaneously. For example it is possible to set a M10x-M to remote and to start it with
one Modbus register write command.
9.2.7.1. Function Codes
Depending from Modbus function code the commands are handled as described below.
Function 06: Commands (bit =1) are always sent to M10x-M, regardless of any change
to the command bit value.
Function 16: Commands Are sent only when the command bit is toggled, (either 0 to 1
or 1 to 0)
The following tables detail the registers, bit functionalities and show examples of utilizing
Modbus bit commands.
Modbus
Function
Code
Modbus-
Register
Device Number Modbus Register
Name
Description/Re-
marks
6/16 45001 1 Bit Commands Note: content of
the register indi-
cates up to 16 com-
mands
6/16 45002 2 Bit Commands
6/16 45003 3 Bit Commands
6/16 : : :
6/16 45128 128 Bit Commands
Table 29 Default Modbus Bit Command Registers
Following table shows how to control a starter by control command bits
Execution order is from highest (bit 15) to lowest bit (bit 0).
Table 30 Default Bit Map Control Commands Low Byte
Bit 07 Bit 06 Bit 05 Bit 04 Bit 03 Bit 02 Bit 01 Bit 00 Register
45001
1 1 1 1 1 1 1 1 Device
Number
Trip
Reset
CA to
Remote
Open
K1
Close
K1
Start
CW
Stop
Start
CCW
Bit Function