Ethernet I/O Modules
6.3 Modbus Register Table
Data from 16-bit registers is transmitted in high-byte first order. For example: 0x0A0B ==> 0x0A, 0x0B.
Data from 32-bit registers is transmitted as two 16-bit registers, and is in low-word first order. For
example: 0x0A0B0C0D ==> 0x0C, 0x0D, 0x0A, 0x0B.
6.3.1 Common Functions
0xxxx: DO Address (Base 0)
Starting
Address
Points
Description
Bits per
Point
Range
Access Type
127
(0x7F)
1
Restores all default web
settings
1
1 = Restore
W (Pulse)
128
(0x80)
1
Default ID Settings
1
1 = Restore
W (Pulse)
133
(0x85)
1
Reboots the PETL/tET/tPET
module
1
1 = Reboot
W (Pulse)
Notes
“
W
”: Write
3xxxx: AI address (Base 0)
Starting
Address
Points
Description
Bits per
Point
Range
Access
Type
151
(0x97)
1
Firmware Version
16
“123” denotes that the
version is 1.2.3
R
158
(0x9E)
1
Modbus Communication
Status
16
0 = No Error
1 = Timeout
R
160
(0xA0)
1
Pair-Connection Status
16
0 = Normal
1 = Timeout
2 = Disconnected
R
Notes
“
R
”: Read
ICP DAS CO., LTD.
PETL/tET/tPET DIO Series User Manual, Ver. 2.1, Sep. 2014, Page: 96
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