Watlow D4T Data Logger
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Chapter 3 Using the D4T Front Panel
- Gateway: is a device used on the network to route messages with IP addresses that do not
exist on the local network.
• MAC Address: xx:xx:xx:xx:xx:xx (Will be different and unique for each data logger)
- MAC address: is a manufacturer supplied address for the network interface card.
• Display Units: [
°F] (Fahrenheit), °C (Celsius)
• Modbus
®
TCP Enable:
[Yes], No
- Modbus is an industrially hardened field bus protocol used for communications from the
data logger to other devices on the network; only one connection via Modbus is allowed.
• Modbus Word Order:
[High], Low
- Modbus allows a user to select the word order of two 16-bit words in floating point values.
• Data Map:
[1], 2
- Data Map, the user can switch Modbus registers from the comprehensive listing of D4T reg-
isters to a limited set of the legacy F4 controller registers (1 = D4T, 2 = F4 compatibility).
Configuring Ethernet Communications
To change Ethernet parameters:
1. Push the
Menu, Settings and Network buttons, in that order.
2. Push
Ethernet.
3. Change desired settings.
For Ethernet connectivity options and step-by-step instructions on connecting the D4T into an
Ethernet network, see chapter 3 of the D4T Installation and Troubleshooting User's Guide.
Default Ethernet Parameters and Settings
The bracketed bold settings below represent the defaults as delivered from the factory:
• IP Address Mode: [
DHCP], Fixed
- DHCP: Dynamic Host Configuration Protocol, allows for dynamic distribution of network
settings by a DHCP server.
- Fixed: also referred to as a static IP address, is configured manually for a specified net-
work.
• Actual IP Address: [
192.168.0.222]
• Actual IP Subnet: [
255.255.255.0]
- Subnet: a method used to logically divide and isolate networks.
Note:
The Actual IP Address and Actual IP Subnet addresses shown above will be the default
addresses if IP Address Mode is set for Fixed.
• Actual IP Gateway:
[0.0.0.0]