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PRODUCT INSTALLATION MANUAL
3.1.2.
MUX A
DDRESSING
The address of the MUX 2700 is determined by the DIP switches as noted above. Each MUX on the same
RS-485 network must have a different address, but they do not have to be sequential and do not
necessarily need to start at address 1. Possible addresses are 1-31. Address 0 is invalid and cannot be
used. Note that network properties of the software setup refers to "multi-dropping." This refers to multiple
MUX 2700s on the same network, not multiple devices on the same I/O loop (also referred to as "multi-
dropping"). Multi-dropping should be enabled in the network setup.
3.1.3.
B
R
AUD
ATE
The baud rate of the MUX 2700 must match the baud rate of the PC Com-Port and the RS-232/RS-485
converter. All three units must have the same baud rate to function properly. The baud rate can be either
9600 or 19200 and is selected as shown on the label located on the side of the MUX unit.
3.1.4.
RS-232/RS-485 C
An RS-232 to RS-485 converter must be placed between the HIS and the computer's RS-232 port. P+F
recommends the Keithley M2000 converter for non-CE applications. Any standard converter is acceptable,
but other models have not been tested by P+F. Alternate brands are available with CE certification.
If only one RS-232 to RS-485 converter is used in setting up the system, then the RS-485 network must be
less than 1200 meters (4000 feet). If the network surpasses 1200 meters, an RS-485 repeater must be
used. The Keithley M2000 can function as a repeater instead of a converter. The repeater amplifies and
retransmits the original RS-485 signal enabling transmission over longer distances.
3.2.
S
-
TART
UP
The proper start-up sequence for the HIS system is as follows:
1. Make all field and control connections to the termination board.
2. Connect RS-485 communications and adjust network settings as appropriate.
3. Plug the MUX 2700 into the termination board.
4. Apply 24VDC to HIS board or power up field devices.
5. After the MUX start-up sequence is complete then initiate AMS.
3.3.
C
ONFIGURATION
Each channel of the HIS board can accommodate a SMART device. For details on device wiring please
refer to Section 2.7.4. For information on setting the shield jumpers refer to Section 2.7.2. No other
configuration is required on the HPTB.
3.4.
MUX I
NDICATORS
Three LEDs on the top of the MUX 2700 indicate status. Normal operation is as follows :
•
PWR ON – After power is applied the green LED will flash for a period of 15 seconds and then glow
solid. The 2700A MUX power LED will not flash. Power is applied to the MUX automatically when it
is plugged into the socket on the termination board.
•
FAULT – This red LED should not be lit during normal operation.
•
HART TX – This yellow LED shows communication with field devices.
ONVERTER
S
EQUENCE
DOCT-B3K6
P
AGE
17
21
OF
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