Application Guide

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System Application Guide SAG586505000

Spec. No. 586505000 (Model LMS1000) SAG586505500

Spec. No. 586505500 (Model LMS1000) Issue AZ, April 7, 2014

Page 45 of 62

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Port Pin Number Application Input/Output

Transmitted Data (TxD)

Output from System

Received Data (RxD)

Input to System

Signal Ground (Gnd)

6 -- --

7 -- --

8 -- --

9 -- --

Table 5

OEM3 Port (9-Pin Female D-Type Jack) Pin Assignments

RS-485 Configured as DCE

2.4.9 Controls and Indicators: The following controls and indicators are provided on the CPU

circuit card. Refer to the Operating Chapter in the User Instructions (Section 5847) for

descriptions and locations.

(A) Eight Programmable LED Indicators: Programmable for illumination event and color (red,

amber, or green)

(B) One Programmable Switch (can be used in program lines)

(D) One CPU/Hardware Fail LED Indicator

(E) One Power On / Low Lithium Battery LED Indicator

2.4.10 External CPU/Hardware Fail Alarm Contacts: A single set of Form-C relay contacts change

state when a hardware failure activates one or more of the hardware fail channels. In the

LMS1000, these channels are B0081 through B0099. These contacts are rated for 0.6A at 125

VAC, 0.5A at 110 VDC, and 2.0A at 30 VDC.

2.4.11 Watchdog Circuit: A watchdog circuit constantly monitors program execution and issues a

system reset if it appears the processor is "lost". If the processor is still not functioning after

the first reset, the circuit automatically shuts down the system by performing a permanent

system reset. This permanent reset can be cleared by momentarily depressing the CPU RST

(reset) pushbutton switch.

2.4.12 Memory Backup Battery: All of the information that is programmed by the customer is stored

in RAM memory on the CPU circuit card. When power is removed, the real time clock and

RAM memory are backed up by a lithium battery and a .1 farad capacitor. The capacitor

actually serves two purposes. First, when the memory and clock are on backup power, the

capacitor supplies the load (for about 20 minutes) before the battery takes over. This reduces

the drain on the battery which helps lengthen its life. Second, when a battery is removed, the

capacitor continues to supply power until the new battery is installed. Thus, the contents of the

clock and memory are preserved while the lithium battery is being replaced.

2.5 LMS1000 Front Panel Display Option

2.5.1 Provides a front panel vacuum florescent display (VFD) and keypad.

• The VFD is a 4-line, 20-character display.

• The keypad consists of 12 keys; numbers 0 through 9, ENTER, and MENU. The following

numeric keys also function as arrow keys: 2 = UP, 8 = DOWN, 4 = LEFT, 6 = RIGHT.

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