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

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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
Function 16: Commands
The following tables detail the registers, bit functionalities and show examples of utilizing
Modbus bit commands.
Modbus
Function
Code
6/16
6/16
6/16
6/16
6/16

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).
Bit 07 Bit 06
1 1
Trip
Reset

Table 30 Default Bit Map Control Commands Low Byte

56
(bit =1) are always sent to M10x-M, regardless of any change
to the command bit value.
Are sent only when the command bit is toggled, (either 0 to 1
or 1 to 0)
Modbus- Device Number
Register
45001 1
45002 2
45003 3
: :
45128 128
Bit 05 Bit 04
1 1
CA to Open
Remote K1
Modbus Register
Name
Bit Commands
Bit Commands
Bit Commands
:
Bit Commands
Bit 03 Bit 02 Bit 01
1 1 1
Close Start
Stop
K1 CW
DATA M A P PI NG
Description/Re-
marks
Note: content of
the register indi-
cates up to 16 com-
mands
Bit 00 Register
45001
1 Device
Number
Start
Bit Function
CCW
1TG C 9 0 8 0 0 4 M 0 2 0 1