Detcon RD-64X-N7 - Manual (Page 15)

RD-64X Operators Manual
relay) condition is cleared. In latching mode, the relay remains active even after the alarm or fault
condition has cleared. Once activated, the relay can only be deactivated by acknowledging the Alarm
Reset function on the front panel of the X40 controller or by activating the external reset switch if one has
been installed (See section 7.1.4 ENTER and RESET/ACK Switch).
4.2 General Wiring Notes
™ Follow generally accepted guidelines for RS-485 serial networks. Do not wire devices in long-distance
‘T-Tap’ configurations. Instead, use a “daisy-chain” wiring scheme.
™ Use Detcon recommended cabling whenever possible.
• Belden P/N 1502P cable is recommended for a single cable providing serial communications
and power.
• Belden P/N 9841 cable is recommended for a single cable providing serial communications
only.
™ Ground the cable shielding at one end only. Other points of grounding may cause a ground loop, and
induce unwanted noise on the RS-485 line, which in turn may disrupt communications.
5. Initial Start-up
The RD-64X remote display will power up as soon as DC power is applied. There is no external power
switch to the unit.
NOTE: Before applying power, check to make sure that all the wiring connections and
external devices are installed correctly. Applying power with devices hooked up incorrectly
may cause damage to the equipment.
When power is applied to the unit, the unit will boot up and display the company name, model, firmware
version and COMM ports available. For this unit, that information should be:
DETCON INC COMM1 MODBUS MASTER
RD-64X COMM2 MODBUS SLAVE
Version #.##X
It will proceed to poll Modbus™ addresses from the attached controller. The display will show up to 8
channels at one time. The LCD will then refresh and display the next 8 channels and so on until the LCD
cycles back to the first 8 channels and repeats the process. This is considered normal operation.
If a previous configuration does not exist, the user will need to configure the network from the user-
interface. After the unit has been configured, the unit will begin normal operation. If the unit has been
configured properly, the unit will display the current status of the devices that it is configured for.
6. Secure Digital Card
The RD-64X remote display has a feature that allows data logging when a secure digital (SD) memory card
is installed. The SD card must be installed in the SD slot (J9) on the back of the remote display’s PCA
before the remote display is powered up. The remote display will notify the user if a successful installation
of the card was achieved upon power up. If successful, the remote display will automatically format the
card and create the necessary files for data logging. See section 7.3.17 for more information regarding the
data logging feature.
Model RD-64X Operators Manual Rev. 0.1 Page 11 of 30