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Loop-back plug (see figure 5-7 and – Emerson Process Management Bristol ControlWave ExpressPAC User Manual

Page 81

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ControlWave ExpressPAC Instruction Manual (CI-ControlWave EPAC)

Option

Tests

Pulse Counter inputs on the CPU/System
Controller board.

Prom/Ram

Checks the SRAM and FLASH memory.

Analog Input

Checks AIs on the Process I/O board.

Communications

Checks serial communication ports COM1,
COM2, and COM3. The External loop-back tests
require the use of a loop-back plug.

Discrete I/O

Checks DIs and DOs on the Process I/O board.

Ethernet

Checks the Ethernet port.

Keypad & Display

Checks the optional display/keypad hardware.

Port Loop-back

Test

WINDIAG allows you to select the communication port to test.
Depending on the type of network (RS-232 or RS-485) and the port in
question, a special loop-back plug is required:

 Port 1 - RS-232 uses a 9-pin female D-type loop-back plug (see

Figure 5-7).

Figure 5-7. COM1 & COM2 RS-232 Loop-back Plug/Wires

Revised Mar-2011

Service & Troubleshooting

5-13