User manual

6 Connectable PLC
292 © Copyright Reserved Autonics Co., Ltd.
6.19.2 Available device
Available devcie of Modbus Master and displayable parameter are as below.
Type Device Mark
Range
Start
End
Bit
Bit device area 0 000001 065536
Bit device area 1 100001 165536
GP/LP inner bit memory UB UB0 UB6047F
Word
Word device area 3 300001 365536
Word device area 4 400001 465536
GP/LP inner bit memory UW UW0 UW6047
Device address is for Modbus Master protocol is 1 based protocol address(Start address: 1).
The below example is for TM series of Autonics product.
Following table is part of memory map(using 0 based protocol address) for TM series.
No (Address)
Parameter Description
TM2 TM4
31001 (03E8) 31001 (03E8) CH1 Present Value Present measured value
31002 (03E9) 31002 (03E9) CH1 Dot
Decimal point position of
sensor
31003 (03EA) 31003 (03EA) CH1 Unit Sensor temperature unit
31004 (03EB) 31004 (03EB) CH1 Set Value
Present controlled
temperature setting value
31005 (03EC) 31005 (03EC) CH1 Heating_MV Heating control value
Dot line area is for device address, solid line area is for protocol address.
To read CH1 PresentValue of TM2 from TM2_Mod protocol, it uses device address ( 31001 ).
For Modbus Master protocol, it uses protocol address (03E8) plus 1. Device address of Modbus
Master protocol is displayed with decimal. Therefore, protocol address value as 0x03E9 which is
0x03E8 plus 1 of CH1 PresentValue is converted decimal value as 1001 and it is used as device
address. (Converting description is as below table.)
Use device address
Convert address
(Hexadecimal→Decimal)
Use protocol address
Protocol TM2_Mod
→
Protocol
address
[Hexadeci
mal]+1
→
Protocol
address
[Decimal]
→
Protocol Modbus Master
Device TM
Read
word
Read
word
Device 3
Address 31001 0x03E8+1 1000 Address 01000
Used device address on Modbus Master protocol uses the value of protocol address (in case of
0 base) plus 1. Device address of Modbus Master protocol uses decimal value.