Emerson Process Management Bristol ControlWave ExpressPAC - Manual (Page 81)

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