48TC

Table 24 – Manufacture Date

When troubleshooting, you may need to know a control module’s manufacture date

Obtain the manufacture date from

Notes

 

a...

 

 

Module status report (modstat)

To obtain a modstat with BACview6:

 

1. Press Function (FN) key and hold.

 

2. Then press period (.)

 

3. Release both buttons.

 

The report shows the date under Main board hardware.

Sticker on the back of the main control

The serial numbers are unique and contain embedded information:

module board

“RMP”

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

”Serial No: RMPYMxxxxN”

“YM”

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

(Bar Coded & Typed Number)

“xxxx”

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

 

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

 

“N”

product for the mentioned manufacturing time period.

 

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

 

 

ten years.

Table 25 – Basic Protocol Troubleshooting

Problem

Possible cause

Corrective action

No communication with 3rd

Incorrect settings on SW1, SW2 and SW3

Verify and correct switch settings. Cycle

party vendor

 

power to RTU---MP after changing switch

 

 

settings.

 

RS485 Port has no voltage output

Verify RTU---MP has correct power supply

 

(check with RTU---MP disconnected from RS485 commu-

Possible bad driver on board.

 

nication bus)

 

 

Bacnet @ 9600/19.2K --- .01 to .045vdc

Check RS485 bus for external before re-

 

 

connecting 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

Check 3rd party vendor RS485 commu-

 

terminators are correctly installed

nication wiring guidelines and trouble-

 

 

shooting procedures

S MaxInfo Frames: This property defines the maximum number of responses that will be sent when our controller gets the token. A valid number is any positive integer. The default is 10 and should be ideal for the majority of applications. In cases where the controller is the target of many requests, this number could be increased as high as 100 or 200.

NOTE: MS/TP networks can be comprised of both Master and Slave nodes. Valid MAC addresses for Master nodes are 0 - 127 and valid addresses for Slave nodes are 0 - 254.

NOTE: See RTU-MP 3rd Party Integration Guide (or alternatively Form 48-50H-T-1T Appendix) for Protocol Maps.

Table 26 – Modbus Exception Codes that May be

Returned From This Controller

CODE

NAME

MEANING

 

 

 

 

 

The Modbus function code used

01

Illegal Function

in the query is not supported by

 

 

the controller.

 

 

 

 

 

The register address used in the

02

Illegal Data Address

query is not supported by the

 

 

controller.

 

 

 

 

 

The Modbus Master has at-

04

Slave Device Failure

tempted to write to a non---exist-

 

 

ent register or a read---only regis-

 

 

ter 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 protocol 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 above).

3.Verify that the BAS is configured to speak 2-wire EIA-485 to the controller. The BAS may have to con- figure 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 controller’s Modbus slave address is set by its rotary address switches.

6.Verify that the BAS is using the proper Modbus func- tion codes to access data from our controller. Sup- ported function codes are shown above.

54

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Carrier 48TCA04---A12 appendix Modbus, Manufacture Date, Basic Protocol Troubleshooting, Code Name Meaning
Page 53 Page 55

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