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2.3. Preset multiple registers (10H)
Function Code 16 (by decimal) or 10H (by hexadecimal) enables users to change the contents in multiple continuous address registers.
All the writable parameters that can be written with Function 06 can be written with this function code.
The following example is to modify the action and delay time settings of Load Monitoring 1 and Load Monitoring 2 in Slave Device #3.
For Load Monitoring 1, the action set address is 2AH and delay time set point is 2BH. For Load Monitoring 2, the action set address is
2CH and delay time set point is 2DH.
Downstream message (from host to slave):
Device address
Function code
Variable start
address
High byte
Variable start
address
Low byte
Variable
number
High byte
Variable
number
Low byte
Number of
variable bytes
Variable value
High byte
03H
10H
00H
2AH
00H
04H
08H
07H
Variable
value
Low byte
Variable
value
High byte
Variable
value
Low byte
Variable
value
High byte
Variable
value
Low byte
Variable
value
High byte
Variable
value
Low byte
Check code
Low byte
Check code
High byte
D0H
00H 0AH 07H D0H 00H 0AH 25H
7CH
Table 2-6 Function Code 10 downstream message example
Upstream message (from slave to host):
Device
address
Function
code
Variable start
address
High byte
Variable start
address
Low byte
Variable
number
High byte
Variable number
Low byte
Check code
Low byte
Check code
High byte
03H
10H
00H
2AH
00H
04H
E1H
E0H
Table 2-7 Function Code 10 upstream message example
3. Communication address tables
Read variable values with Function 03H, write a single variable with Function 06H and multiple variables with Function 10H
Address
Defi nition
Variable type
Unit
Attribute
Variable format
System parameters
00H
Device ID No.
Uint
R
Power grid parameters
01H
Phase A voltage
Uint
V
R
×1
02H
Phase B voltage
Uint
V
R
×1
03H
Phase C voltage
Uint
V
R
×1
04H
Power factor
Uint
R
/100
05H
Frequency
Uint
HZ
R
/100
06H
Power (low word)
Uint
KW
R
/100
07H
Power (high word)
Uint
KW
R
08H
Phase A current
Uint
A
R
×1 or ×2
Note 1
09H
Phase B current
Uint
A
R
×1 or ×2
Note 1
0AH
Phase C current
Uint
A
R
×1 or ×2
Note 1
0BH
Phase N current
Uint
A
R
×1 or ×2
Note 1
0CH
Ground (residual) current
Uint
A
R
Ground: ×1 or ×2
Note 1
Residual current: ×0.01
0DH
Phase A current imbalance
Uint
R
%
0EH
Phase B current imbalance
Uint
R
%
0FH
Phase C current imbalance
Uint
R
%
10H
Phase A fault current
Uint
A
R
×1 or ×2
Note 1
11H
Phase B fault current
Uint
A
R
×1 or ×2
Note 1
12H
Phase C fault current
Uint
A
R
×1 or ×2
Note 1
13H
Phase N fault current
Uint
A
R
×1 or ×2
Note 1
14H
Ground (residual) fault current
Uint
A
R
Ground: ×1 or ×2
Note 1
Residual current: ×0.01
15H
Phase A current imbalance (fault)
Uint
R
%
Instruction Leafl et
Effective September 2022
IZM6 Series Air Circuit Breaker
Operating Instruction Leafl et