ProtEX-MAX PD8-6210 Explosion-Proof Analog Input Batch Controller
Instruction Manual
61
Advanced Setup and Calibration
Multi-Point Calibration & Scaling
The controller is set up at the factory for 2-point linear
calibration. The number of points for multi-point
calibration/scaling is set up in the
Advanced
Features
menu. Up to 32 linearization points may be selected.
See
details.
Maximum/Minimum Readings
The max & min readings (peak & valley) reached by
the process can be displayed either continuously or
momentary:
1. Display briefly by assigning to the digital inputs in
the
User
menu.
2. Display continuously by assigning either display
to max/min through the
Display
menu.
•
Changing the programming of the F1-F3 function
keys will disable the default batch operation of
these keys, and is not recommended for batch
control applications.
Any of the digital inputs can be programmed to reset
the max & min readings.
To display max/min readings continuously:
Assign either display to Max (
d Hi
), Min (
d Lo
),
or toggle between Max and Min (
d HL
) every
10 seconds.
•
Note that changing the default programming of
the main or second displays may affect viewing
the batch total (main display) or preset (second
display) of the batch process.
Noise Filter (
filter
)
The noise filter is available for unusually noisy signals
that cause an unstable process variable display. The
noise filter averages the input signal over a certain
period. The filter level determines the length of time
over which the signal is averaged. The filter level can
be set between 2 and 199. The higher the filter level,
the longer the averaging time and so the longer it
takes the display to settle to its final value. Setting the
filter level to zero disables the filter function.
Noise Filter Bypass (
bypass
)
The noise filter bypass changes the behavior of the
controller so that small variations in the signal are
filtered out but large abrupt changes in the input
signal are displayed immediately. The bypass value
determines the minimum amount of signal change to
be displayed immediately. All signal changes smaller
than the bypass value are filtered or averaged by the
controller. The noise filter bypass may be set between
0.1 and 99.9% of full scale.
Rounding Feature (
round
)
The rounding feature is used to give the user a
steadier display with fluctuating signals. Rounding is
used in addition to the filter function.
Rounding causes the display to round to the nearest
value according to the rounding selected.
Modbus RTU Serial
Communications (
serial
)
The controller is equipped with serial communications
capability as a standard feature using Modbus RTU
Serial Communication Protocol.
The controller may be connected to a PC for initial
configuration via the on-board USB connection. For
ongoing digital communications with a computer or
other data terminal equipment, use the RS-485
connection with the appropriate serial converter; see
•
DO NOT
connect any equipment to the RJ45
M-LINK connector. Otherwise damage will occur
to the equipment and the controller.
•
DO NOT
disconnect the RJ45 connector located
to the left of the power terminal block. Doing so
will disable the on-board digital I/O, and the
RS-485 serial communications.
Notes:
More detailed instructions are provided with each
optional serial communications adapter.
Refer to the ProtEX-MAX Modbus Register Tables located at
When using more than one controller in a multi-drop
mode, each controller must be provided with its own
unique address. The controller address (Slave ID)
may be programmed between 1 and 247. The
transmit delay may be set between 0 and 199 ms.
The parity can be set to even, odd, or none with 1 or 2
stop bits.
