Amtech Axpert-Eazy Series Instruction Manual page 200

Mode Mbus
/Group
E701 40536
~
E715 40550
Mode Mbus
/Group
G601 40626
G602 40627
G603 40628
G604 40629
G605
40630
5. Description of Different Queries Used for communication
5.1 Read Single Parameter
This query is used for single parameter read. Total 8 bytes are transmitted. 3.5-character times delay
is provided at the start and end of the query for indication of starting and ending of query. The 3.5
character time is calculated as below.
If 9600 baud rate is used then
Delay = (3.5*11)/9600 = 4.01 mSec
For example if you want to read parameter 40003 (Output Current) then the format of query is as
10
below.
Byte
Number
11
1
2
3
4
5
6
7
8
Amtech
11.12
E210 E310
40470
E211 40471 E311
E212 40472 E312
E213 40473 E313
E214 40474 E314
E215 40475 E315
Mode Mbus Mode
ID /Group ID /Group
G101 40551 G201
~ ~ ~
G115 40565 G215
Mode Mbus Mode
ID /Group ID /Group
G606 40631 G611
G607 40632 G612
G608 40633 G613
G609 40634 G614
G610 G615
40635
Query Bytes Description
01h First byte is the address of the modbus slave device referred as station
number.
03h Indication of read operation
00h Starting address High byte
02h Starting Address Low byte. Parameter 40003 is addressed as 0002h.
Byte 3 and 4 has right justified packed value of parameter number.
00h No of parameters High Byte
01h No of parameters Low Byte. If only one parameter is to be read then 01h
is used. More than one parameter can be read.
CRC Low CRC Low Byte
CRC High CRC High Byte. The High and Low bytes are reversed in CRC
transmission. The method of calculating CRC is described in the next
E410
40515 40485
40516 E411 40486
40517 E412 40487
40518 E413 40488
40519 E414 40489
40520 E415 40490
Mbus Mode Mbus
ID /Group ID
40566 G301 40581 G401
~ ~ ~
40580 G315 40595 G415
Mbus Mode Mbus
ID /Group ID
40636 H101 40647
40637 H102 40648
40638 H103 40649
40639 H104 40650
H105
40640 40651
E510 E610
40530
E511 40531 E611
E512 40532 E612
E513 40533 E613
E514 40534 E614
E515 40535 E615
Mode Mbus Mode
/Group ID /Group
40596 G501 40611
~ ~ ~ ~
40610 G515 40625
Mode Mbus Mode
/Group ID /Group
40500
40501
40502
40503
40504
40505
Mbus
ID
~
Mbus
ID