TE Technology TC-36-25-RS485 - Manual (Page 25)

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When this is turned on, any changes to software settings at run time are stored in EEPROM as well as RAM. The
values can then be recalled upon a power‐up or reset condition. The maximum number of writes to an EEPROM
location is 1,000,000. So, you may want to keep this setting off most of the time in order to avoid this limit.
When this is turned off, any changes to software settings are only stored in RAM. No settings are saved to
EEPROM. This setting gives you the ability to change run‐time settings without changing desired power‐up settings.
This allows you to make unlimited changes to run‐time settings without having to write to EEPROM.
2.4.2 EXTERNAL DISPLAY ENABLE
The optional MP‐2986 display will display the set temperature and input 1 (primary thermistor) reading if this is
enabled.
2.4.3 SAMPLE DELAY and SAMPLE INTERVAL
Enter a SAMPLE DELAY to set an estimated time interval between when data samples are taken. Because there can
be up to 255 controllers communicating on the same network, the sample time interval set in SAMPLE DELAY can
be different than the actual sample interval. This varies with the number of controllers in the network, alarm
conditions, number of controllers being scanned and if data is being saved. The SAMPLE INTERVAL displays the
actual sample period.
2.4.4 SAVE DATA TO FILE
Each sample can be saved to a file in the SAVE FILE box. The data saved is the controller address, sample time, and
the temperature sensed on input 1 (primary thermistor) for each controller being scanned.
2.4.5 DOWNLOAD DEFAULTS
The DOWNLOAD DEFAULTS section is used to reprogram all settings in the controller with the factory defaults. The
index control can be used to view the default settings. Clicking the GO button will program the controller in the
ADDRESS box with these settings.
2.4.6 CHANGE CONTROLLER ADDRESS
The allowable address range is from 1 to 255, but not 99. Addresses 0 and 99 are reserved. Do not program a
controller with a reserved address. A unique address number needs to be assigned to each controller on a multi‐
controller network to prevent communication errors.
NOTE: Programming two or more controllers with the same address will cause communication errors. If this
occurs, place a jumper between JP2‐1 and JP2‐4 in one of the controllers to set the address to 99 (as described
previously in Section 2.0). Alternatively, remove one of the controllers from the network, and reprogram it
separately with a unique address before returning it to the network.