INSTALLATION |
on the back of the PMU (this cable will be
2.Switch the On/Off switch on the back of the PMU to the “On” position.
3.Verify that the “PWR” indicator on the front panel of the PMU stays on continuously.
4.Verify that the three other indicators on the front panel of the PMU are flashing in a repeating sequence. The “MUX” indicator should flash once every 250 milliseconds; first by itself, next with the “DATA” indicator, and then with the “ALARM” indicator.
PMU PROGRAMMING
The PMU’s operational program will use the factory default values for its operational parameters unless re- configured by the user. The
CAUTION
Changing parameters not covered in this manual may lead to unsatisfactory operation of the PMU option.
RS232 CRT Terminal |
|
| PMU | |
(or PC COM Port) |
|
|
| Left VDT Interface |
|
| Null Modem Cable |
|
|
| 1 |
| 1 |
|
Tx Data | 2 |
| 2 | Tx Data |
Rx Data | 3 |
| 3 | Rx Data |
RTS | 4 |
| 4 | RTS |
CTS | 5 |
| 5 | CTS |
DSR | 6 |
| 6 | DSR |
Ground | 7 |
| 7 | Ground |
DTR | 20 |
| 20 | DTR |
Figure 13 - DB-25 Terminal Connections
RS232 CRT Terminal |
|
|
| PMU |
(or PC COM Port) |
|
|
| Left VDT Interface |
|
| Null Modem Cable |
|
|
| 1 |
| 1 |
|
Rx Data | 2 |
| 2 | Tx Data |
Tx Data | 3 |
| 3 | Rx Data |
DTR | 4 |
| 4 | RTS |
Ground | 5 |
| 5 | CTS |
DSR | 6 |
| 6 | DSR |
RTS | 7 |
| 7 | Ground |
CTS | 8 |
|
|
|
| 9 |
| 20 | DTR |
Figure 14 - DB-9 Terminal Connections
2.Turn the terminal on and set the communications protocol per Table 5.
Terminal Setup
The following initial steps are required to set up the terminal and access the PMU.
1.Connect the RS232 CRT terminal to the
CAUTION
DO NOT plug the RS232 CRT terminal into the front panel of the PMU (damage to terminal may result). This connnector is for another device in another application.
Table 5 - Terminal Communications Protocol
PARAMETER | VALUE |
|
|
Baud Rate | 9600 BPS |
|
|
Data Bits | 8 |
|
|
Parity | None |
|
|
Stop Bits | 1 |
|
|
|
|
3.Press the Enter key one or more times until the “Disconnected - Hit Any Key To Connect” prompt appears on the terminal:
Software Initialization
Before you attempt to program any PMU parameters, all parameters should be returned to the factory default values. The following procedure is used to initialize the PMU with its factory defaults:
15