DE FAU LT DATA M AP
DATA MAPPING
56
1TG C908004M0 201
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