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TROUBLESHOOTING
CARETAKER PLUS INSTALLATION AND OPERATIONS MANUAL
23
Troubleshooting
Common Problems and Solutions
I. Missing blocks of data on shared device and/or buffer
Overflow error display occurs - serial only
A. Flow control is not set or wired properly
If your device uses X-on/X-off, ensure that the corresponding port is set for
X-on/X-off. If you are using DTR you have a miswired cable, see Section IIA
below.
II. Nothing happens when sending data
A. Improper cabling
See 'CABLING' section.
B. Protocol does not match
Protocol on serial units is the baud rate, parity type, number of stop bits, bit
size of the characters (5, 6, 7, or 8), and the handshaking type (DTR or X-on/X-
off). Protocol in your device must match the protocol in the unit. See 'CON-
FIGURATION' section.
C. Printer or computer connected to wrong port.
Input ports are 1-8, output port is O. Ensure devices are connected to proper
ports.
III. Garbled data received at shared device
A. Protocol does not match
See Section ll B above.
B. Flow control
See Section IA above.
C. Wiring interference
This may occur on computers which are a long distance from the Caretaker
Plus. See 'CABLING' section for information on cable routing.
IV. Computer locks up
A. Buffer is full
Place unit in flow control display mode. If the computer port's LED is lit, the
buffer is full. The shared device must accept some data to empty the buffer and
allow the unit to accept more data from the computer. This will unlock the
computer.
B. Flow control improperly wired
See Section IA above.