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Rs-232 communications protocol & command set – Panamax BANKS WIRING MB1000 User Manual

Page 10

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8

Communications Protocol

Connector Pin-out:

Pin 2, Transmit. The MB1000 transmits data on this pin.

Pin 3, Receive. The MB1000 receives data on this pin.

Pin 5, SG (signal ground).

Baud Rate:

2400bps

Start Bits:

1

Data Bits:

8

Stop Bits:

1

Parity:

None

Flow Control:

None

Controller Commands

Commands and responses are in the form of ASCII character

strings terminated with a carriage return ASCII character

13 (hex).

If the state variable LINEFEED MODE = ON, a linefeed charac-

ter (, 0Ah, 10d) will follow the carriage return.

Incoming messages (to the MB1000) shall be terminated with

one of the following characters: NUL (00h, 00d),

carriage return (, 0Dh, 13d) or line feed (, 0Ah, 10d).

The MB1000 shall discard the incoming message under the fol-

lowing conditions:

The message overruns the receiver buffer (32 characters).

No terminating character (NUL, , ) is received within

500ms of receipt of the last character.

The following are commands sent by the controlling equipment

to the MB1000.

Note: Responses are only transmitted if unsolicited feedback is

enabled (!SET_FEEDBACK)

ALL ON

Turns on all outlets. Turn on is immediate with no delay.

Send to UPS:

!ALL_ON

_____________________________________________
If power is not switched off due to low battery conditions:

Action:

Turn on Outlet Bank 1

Response from UPS:

$BANK 1 = ON

_____________________________________________
If UPS battery level > Shutoff Threshold

Action:

Turn on Outlet Bank 2

Response from UPS:

$BANK 2 = ON

_____________________________________________
If UPS battery level < Shutoff Threshold

Action:

Turn off Outlet Bank 2

Response from UPS:

$BANK 2 = OFF

$BATTERY = charge%

_____________________________________________
Action:

Activate Power Button

Response from UPS:

$BUTTON = ON

_____________________________________________
ALL OFF

Turns off all outlets. Turn off is immediate with no delay.

Send to UPS:

!ALL_OFF

Action:

All outlets will turn off

Response from UPS:

$BANK 1 = OFF

Response from UPS:

$BANK 2 = OFF

Response from UPS:

$BUTTON = OFF

RS-232 Communications Protocol & Command Set

Pin 2 -Transmit

Pin 3 - Receive

Pin 3 - Receive

Pin 2 -Transmit

1

6

2

7

3

8

4

9

5

1

6

2

7

3

8

4

9

5

Pin 5 - Signal Ground

RS232 Pin-out

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