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Rev. 2.01
- 57 -
SRP-350/352plusA&C
7-7 RS-232C Serial Communication Problem
Communication
Failure?
End
1. Check the connection of the
RS-232C Connector and Other side
2. Check the I/F Cable whether it is open or short
3. Check the Txd, Rxd Pin on CPU
4. Check the MAX232 Driving Chip and
related Circuit on I/F PBA
5. Check whether Signal is affected by the
Cable Noise
RS-232C
Problem
Y
N
H/W
Handshake
1. Check the connection of the H/W handshaking
Line and Other side (DTR/DSR)
2. Check the I/F Cable whether it is open or short
3. Confirm the H/W handshaking Protocol
N
Y