Ver.3− − − − 48
Ex 7
Ex 7 A Hitachi register number is shared by both external register and internal register.
Ex 7
Ex 7
* * * * Below setting must be entered from the operator before Modbus communication, with power cycle.
(This example shows only value of direct link is read out, not the value two step further) )
First pair
External
register
number
50001h
2 つ 目 の ペ ア
External register
number
1201 h ( A 001 )
*In the case above, 1201h is used for both external register number and internal register number.
Frequency source (A001)
When
(1) [03h] 、 R eading out Holding register : t arget register (external register) ( s econd pair )
Query:
No
1
Slave address
2
Function code
3
Register start address (high order)
4
Register start address (low order)
5
Number of holding registers (high order)
6
Number of holding registers (low order)
7
CRC-16 (high order)
8
CRC-16 (low order)
Internal register
number
1201h ( A 001 )
Internal register
number
1210h ( A 014 )
[O] input active range end voltage (A014)
= 1 (01h) and
Field Name
Scaling
Format
1.000
Unsigned
Scaling
Format
1.000
Unsigned
Example
(Hex)
01
03
Register address value
12
= Register
00
Number - 1
00
One register
01
81
72
= 100%