GE A8950CC Installing the Data Module, Configure data module, Setting Mode

Installing the Data Module

Overview

The Phoenix A8910MPD data module is capable of inserting/extracting

4 channels of multiprotocol serial data (MPD) per module. With a maximum of four cards per node, the system capacity is 16 channels. Each channel is capable of transmitting and receiving serial data throughout the Phoenix system. The card is not limited to any single data type so that various formats can be mixed on a single card. As with other GE Security MPD products, data translation capabilities are included.

Tools and materials required

The data modules are held in place with simple thumbscrews with screwdriver slots. The only tool recommended is a small flat blade screwdriver.

Installation instructions:

1. Configure data module:

Prior to installation, you must specify the appropriate data format using the rotary switches on the module. For each channel on the data module, rotate the dial switch to the desired format. If you want to select the data format from the front panel, leave the switch in position 0.

Setting	Mode	Setting	Mode
0	Software-selectable (factory preset)	8	RS-485 2-wire 2 V
1	RS-232 (3-wire)	9	RS-485 4-wire standard
2	RS-232 + handshake	A	RS-485 4-wire 1 V
3	TTL	B	RS-485 4-wire 2 V
4	RS-422 2-wire	C	Reserved
5	Manchester/biphase	D	Reserved
6	RS-485 2-wire standard/Sensornet	E	Reserved
7	RS-485 2-wire 1V	F	Test Mode

NOTE: The DATA SELECT switches are shipped in the Software-Selectable setting.

As with all GE Security MPD products, data translation can easily be accomplished using the table information below.

Translation

Input

Output

Comment

TTL		RS-232, 3-wire			3	1	Signal level conversion.
RS-232, 3-wire				TTL	1	3	Signal level conversion.
TTL	RS-422				3	4	Single ended to differential conversion.
RS-422			TTL-wire		4	3	Differential to single ended conversion.
RS-232, 3-wire				RS-422	1	4	Single ended to differential conversion.
RS-422			RS-232, 3-wire		4	1	Differential to single ended conversion.
RS-232, 5-wire				RS-485	2	7 - A	RS232 Handshaking bit is used to indicate Tri-state.
RS-485			RS-232, 5-wire		7 - A	2	Tri-state detection circuitry activates handshaking bit.

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