181-122018_THCD-101 Instruction Manual
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4.1.4. Control Configuration page
The control configuration page is made up of multiple
sections each controlling a different section of the device.
(a) Communication
The communication page allows the user to change the IP
address and Subnet mask of the device. Obviously no octet
in the IP Address or Subnet mask can be set to higher than
‘255’. Once applied the device will need to reset, so the
communications page will show a popup (see below) that
prompts the user to refresh.
(b) Relays
The Relays page allows the user to change the controls for
the two onboard relays.
The hysteresis is a window around the trip point at which
the relays will trigger, so to trigger the relay in the image
above the input must get to Trip point + 2% (of fullscale)
and the relay will not switch off until the input drops to
Trip point – 2% (of fullscale).
The trip point is the Engineering unit at which the Relay
will trip
(c) Filtering
Filtering is used to reduce noise in the device.
Band relates to the filtering limits. The setting is
percentage of fullscale and can be set between 0.01% and
1.00%. Other settings are On so that the filtering will be
fully active, filtering all data all the time, and Off where
there is no filtering.
The size is the time the data is filtered over, a time
greater than 5 will turn the filtering band to on
automatically. For more information on how the adaptive
filter works, see the Principles section (7.6)
Serial & TCP Communication
4.2.1. Introduction
The THCD-101 allows full control and feedback via TCP/IP and USB serial port emulation. All parameters that
can be set using the front panel are also available via remote communications or on the webserver and all
calibrations are performed using remote communication commands or the webserver.
The serial port has a fixed baud rate of 57600 with other settings as follows: 8 data bits, 1 stop bit, No parity,
No handshaking.
TCP/IP communication requires an IP address and subnet mask to be configured for the THCD-101. This can be
set via the front panel. Note that after changing the IP address or subnet mask, the THCD-101 must be re-
initialized by performing a system reset. This is done automatically if setting the IP values using remote
communications or the webserver, but if the IP values from the front panel, you must power off & on for the
new TCP/IP settings to come into effect.
Note for the host connection, the TCP port of the THCD-101 is port 101.
