Network Port Usage; Modbus/Tcp Slave Rules; Supported Function Code; Exception Code - Moxa Technologies ioThinx 4510 Series User Manual

ioThinx 4510 Series

Network Port Usage

Service Type
DHCP
Web Server
RESTful API
SNMP Agent
HTTPs
Modbus/TCP Slave
Auto Search
IOxpress/CLI

Modbus/TCP Slave Rules

Supported Function Code

Point Type
01: COIL STATUS
02: INPUT STATUS
03: HOLDING REGISTER
04: INPUT REGISTER

Exception Code

Code Name
1 ILLEGAL FUNCTION
2 ILLEGAL DATA ADDRESS
3 ILLEGAL DATA VALUE
4 SLAVE DEVICE FAILURE

System Registers

01: COIL STATUS
Parameter
boolInternalRegister
02: INPUT STATUS
Parameter
watchdogAlarmFlag
03: HOLDING REGISTER
Parameter
wirValue
dirValue
firValue
TCP/UDP
UDP
TCP
TCP
UDP
TCP
TCP
UDP
TCP
Register (decimal)
0xxxx
1xxxx
4xxxx
3xxxx
Description
BOOL Internal Register (BIR)
Description
Watchdog alarm flag status (0: Normal, 1: alarm)
Description
WORD IR - Value
DWORD IR - Value
FLOAT IR - Value
A-2
Port
68
80
80
161
443
502
4800
10124
Access Type Supported Function Code
R/W bit 1, 5, 15
R bit 2
R/W word 3, 6, 16
R word 4
Comments
Function code is not valid.
Data address is not valid.
Writing value is not accepted.
Unrecoverable error occurred.
Appendix
Default
Disabled
Enabled
Disabled
Disabled
Disabled
Enabled
Enabled
Enabled
Length Type
48 BOOL
Length Type
1 BOOL
Length Type
48 WORD
96 DWORD
96 REAL