Paradise 205486 REV F manual Appendix C: Baud Select Lines on J4

Appendix C: Baud Select Lines on J4

Baud Select Lines on J4, Monitor & Control Connector

Pins j and e of M&C connector J4 allow the user to have some control over the serial interface, bypassing EEPROM settings for Protocol, Baud Rate or Network Address. This feature becomes important if the user accidentally selects the wrong protocol or baud rate of the SSPA and wants to revert the unit to a known state.

These pins have internal pull-ups and if left disconnected will remain in logic high state. The reverting function of the SSPA is active only on initial power-up. Any alterations to the pins’ state after start-up will allow the SSPA to use internal EEPROM settings to select the baud rate and protocol. These pins also are used automatic addressing. This option will work with I/O board firmware levels of 3.50 or later. Do not attempt to activate this option on units with earlier firmware versions!

To revert an SSPA to a known interface state, complete the following steps:

1.Turn off the SSPA;

2.Establish wire jumpers to the M&C connector J4 according to the desired protocol selection (See Table C-1);

3.Turn on SSPA and remove the jumpers;

4.Connect to SSPA over serial protocol and select the desired settings for protocol and baud rate. Settings will take effect after next SSPA power-up.

Table C-1: Baud Rate and Protocol Reverting Options

Jumper 1	Jumper 2	Selected Protocol	Selected Baud Rate
j-d	e-V	Standard String Protocol (see Section 10)	9600
none	e-V	Standard String Protocol (see Section 10)	38400
j-d	none	Binary Protocol compatible with CO SSPA with	38400
		serial number 100,001 - 199,999
none	none	Settings last saved to EEPROM	EEPROM setting

To turn on automatic addressing:

1.Connect to the SSPA over serial interface;

2.Set the SSPA unique network address to 170 (Hex 0xAA)

3.Cycle the unit’s power. The unit will start with default baud rate of 9600 and Standard String Protocol selection. Pins j and e now will determine the SSPA unique address (See Table C-2).

Table C-2: Unique Network Address Hardware Select †

Jumper 1	Jumper 2		SSPA unique address
j-d	e-V		1
j-d	none		2
none	e-V		3
none	none		4
† SSPA address in EEPROM must be selected to 0xAA in order to activate this option.
Operations Manual, HPA2, Compact Outdoor SSPA		205486 REV F	117