Bryant F Bedienungsanleitung PDF herunterladen (Seite 49)

Table 19 – Manufacture Date

When troubleshooti ng, you may need to know a control module’s manufacture dat e

Obtain the manufacture date from

a...

Notes

Module status report (modstat) To obtain a modstat with BACview

1. Press Function (FN) key and hold.

2. Then press period (.)

3. Release both buttons.

ThereportshowsthedateunderMain board hardware.

Sticker on the back of the main control

module board

”Serial No: RMPYMxxxxN”

(Bar Coded & Typed Number)

The serial numbers are unique and contain embedded information:

“RMP” --- These first three digits are unique to RTU--- MP and are used as an identifier.

“YM” --- These two digits identify the last digit of the year and month (in hex, A=10/Oct)

of manufacture. ”74” would represent a date of manufacture of ”April 2007”.

“xxxx” --- These four digits represent the sequential number of units produced for a given

product for the mentioned manufacturing time period.

“N” --- This final digit represents the decade and toggles between ”N” and ”M” every

ten years.

Table 20 – Basic Protocol Troubleshooting

Problem Possible cause Corrective action

No communication with 3rd

party vendor

Incorrect settings on SW1, SW2 and SW3 Verify and correct switch settings. Cycle

powertoRTU---MPafterchangingswitch

settings.

RS485 Port has no voltage output Verify RTU--- MP has correct power sup ply

(check with RTU--- MP disconnected from RS485

communication bus)

Possible bad driver on board.

Bacnet @ 9600/19.2K --- .01 to .045vdc Check RS485 bus for external before

reconnecting to the bus

Bacnet @ 38.4K --- .06 to .09vdc Voltage, shorts or grounding

Bacnet @ 76.8K --- .1vdc before reconnecting to the bus

Modbus @ 9600 --- 76.8K --- .124vdc

N2 @ 9600 --- .124vdc

Verify devices are daisy chained and repeaters and bias

terminators are correctly installed

Check 3rd party vendor RS485

communication wiring guidelines and

troubleshooting procedures

Table 21 – Modbus Exception Codes that May be

Returned From This Controller

CODE NAME ME ANING

01 Illegal Function

The Modbus function code used

in the query is not supported by

the controller.

02 Illegal Data Address

The register address used in the

query is not supported by the

controller.

04 SlaveDeviceFailure

The Modbus Master has

attempted to write to a

non---existent register or a

read---only register in the

controller.

Modbus

1. Verify that the BAS and controller are both set to

speak the Modbus RTU protocol. The protocol of the

controller is set via SW3 (switches 3, 4, 5, and 6).

The protocol can also be verified by getting a Modstat

of the controller through the BACview. Hit the ”FN”

key and the ’.’ key at the same time to pull up a

Modstat. Scroll to the bottom of the page and there is

a section entitled “Network Communications.” The

active protoc ol and baud rate will be shown in this

section.

2. Verify that the BAS and controller are set for the

same baud rate. The baud rate of the controller is set

via SW3 (switches 1 and 2). The baud rate can also

be verified via the BACview by obtaining a Modstat

(See Fig. 59).

3. Verify that the BAS is configured to speak 2--wire

EIA--485 to the controller. The BAS may have to

configure jumper or DIP switches on their end.

4. Verify that the BAS and the controller have the same

communication settings (8 data bits, No Parity, and 1

stop bit).

5. Verify that the controller has a unique Modbus slave

address. The cont roller’s Modbus slave address is set

by its rotary address switches.

6. Verify tha t the BAS is using the proper Modbus

function codes to access data from our controller.

Supported function codes are shown above.

7. Verify proper wiring between the BAS and the

controller.

8. Verify that the BAS is reading or writing to the proper

Modbus register numbers on the controller. Download

the latest points list for the controller to verify.

9. Verify that the BAS is sending his requests to the

proper slave address of our controller.

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