GN-9289 User Manual
Page 46 of (70)
G-series GN-9289 Modbus TCP_UDP Rev. 1.01.docx
8.3.2.
Adapter Watchdog Time, other Time Special Register (0x1020, 4128)
A watchdog timer can be configured for timeout periods up to 65535(1unit=100msec). The Watchdog timer
will timeout (timer decreased, reached 0) if ModBus operation to the slave node does not occur over the
configured watchdog value, then the slave adapter forces that slot output value is automatically set to user-
configured fault actions and values.
8.3.3.
Adapter TCP/IP Special Register (0x1040, 4160)
Address
Access
Type, Size
Description
0x1040(4160)
Read
1word
Reserved
0x1041(4161)
Read/Write
1word
MODBUS/TCP connection timeout time. (0.5sec unit)
Maximum time of ModBus connection to stay to be opened
without receiving a ModBus request. 0~3600 The 120
(60sec) is default value.
The value 0 disables connection time out specially.
*Notice : When using Ethernet/IP only, this value should be ‘0’
(disable).
0x1042(4162)
Read
1word
Number of ModBus/TCP connected
0x1043(4163)
Read
1word
ModBus/TCP port, fixed 502
0x1044(4164)
Read
1word
Ethernet Interface Speed, 10(10Mbps) or 100(100Mbps)
0x1045(4165)*
Read/Write 1word
IP Setting Method.
0: BOOTP, 1:DHCP
0x1046(4166)
---
---
Reserved.
0x1047(4167)
Read
1word
Status of DIP SW#9 DHCP/BOOTP(Enable/Disable). 0 :
OFF, 1 : ON
0x1048(4168)
Read
1word
Enable/disable Lowest IP address via DIP Switch,
1:Enabled
0x1050(4176)
Read/Write
2word
IP address. If 192.168.123.1, then 0xA8C0, 0x017B. After
update this value, IP address, Subnet mask and Gateway
are applied as new one.
0x1051(4177)
Read/Writ
e
2word
Subnet mask. If 255.255.255.0, then 0xFFFF, 0x00F
0x1052(4178)
Read/Write 2word
Gateway. If 192.168.123.254,then 0xA8C0, 0xFE7B.
0x1053(4179)
Read
3word
Ethernet physical address (MAC-ID).
If 11-22-33-44-55-66, then 0x2211, 0x4433, 0x6655.
* Power off and then power on, this value is applied.
Address
Access
Type, Size
Description
0x1020(4128)
Read/Write
1word
Watchdog time value 16bit unsigned.
The time value is represented by multiples of 100msec.
The 0 (watchdog timeout disabled) is default value.
A changing of watchdog time value resets watchdog error
and counter.
0x1021(4129) Read
1word
Watchdog timer remain value
This value is decreased every 100msec
0x1022(4130) Read
1word
Watchdog error counter, it is cleared by writing address
0x1020
0x1023(4131)
Read/Write
1word
Enable/disable auto recovery Watchdog error when
receiving new frame.
0:Disable, 1:Enable(default). Its value is stored in
EEPROM.
0x1028(4136) Read
1word
IO update time, main loop time. (1usec unit)
