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sharply with an overall saw-tooth pattern, decrease the cooling gain. Alter the
heat-cool overlap until a smooth response in the controlled temperature is
observed during band transition.
Figure 20, Heat/Cool Operation (db<0)
Serial Communications Module (6-SC) (Optional)
Unless controller serial configurations match those of the host
communicating device, front panel serial parameter changing is needed for
communication. Baud rate and character frame must be the same as the other
communicating device. The controller address is the unique node address for
multiple controllers applications. (See Serial Communications Interface,
page 57, for further explanations.)
Baud Rate (bAUd)
The available baud rates are:
300, 600, 1200, 2400, 4800, or 9600
Character Frame Format (ConF)
The character frame can be 7O1, 7E1, 7n2, or 8n1..
Controller Address Number (Addr)
Multiple controllers connected on the same RS485 interface line must each
have a different address number. A value of 0 does not require the address
specifier command, when communicating with the controller. The address
numbers range from 0 to 99.
Abbreviated or Full Transmission (Abrv)
When transmitting data, the controller can be programmed to suppress the
address number, mnemonics, units, and some spaces by selecting YES. An
example of abbreviated and full transmission are shown below:
NO - 6 SET 123.8F<CR> <LF>
YES - 123.8<CR> <LF>
Print Options (PoPt)
Selecting YES for the print options allows the operator to scroll through
the available options using the P button. The up and down arrow keys toggle
between "yes" and "no". "yes" enables the option to be printed when a print
function occurs.
INP
-
Print Input Process Value
SEt
-
Print Setpoint Value
OPr
-
Print % Output Power Value
Pbd
-
Print % Proportional Band Value
INt
-
Print Integral Time Value
dEr
-
Print Derivative Time Value
AL1
-
Print Alarm 1 Value
AL2
-
Print Alarm 2 Value
dEv
-
Print Deviation From Setpoint Value
OFP -
Print % Output Power Offset Value
r_P
-
Print Ramp Rate
Crg
-
Print Relative Gain Value
Cdb
-
Print Deadband Value
OSt
-
Print Output Status
rSP
-
Print Remote Setpoint Reading
-43-
Full Transmission
Abbreviated Transmission
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Troubleshooting
