Symbol Series 3300, Руководство системного администратора

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Error Recovery and Troubleshooting
4 - 9
Memory Transfer Program
The Series 3300 Command Mode functions include a memory transfer utility. Mem-
ory transfer is used primarily for program troubleshooting. This may be required,
for example, if the application program hangs. Analysis of the program is per-
formed by a programmer using tools described in the Series 3000 Application Pro-
grammer’s Guide.
The memory transfer function transfers data from the Series 3300 to the host PC.
You may select to transfer either all or a range of memory.
The following procedure describes the 3300 side of the transaction only. The PC
side of the transaction is determined by the communication software used.
Running Memory Transfer
Memory transfer is conducted using communications over a direct connection be-
tween the 3300 and the host computer, using a null modem cable. The cable has
a male DB-25 connector at one end and a female DE-9 connector at the other end.
Warning
This procedure is not approved for, and should not be performed in, potentially
hazardous environments.
Caution
Always turn off the 3300 before attaching or removing cables or adapters.
1. Turn OFF both the 3300 and the host.
2. Attach the null modem cable. Attach the 25-pin connector to the 3300 and the
9-pin connector to the host computer.
3. Turn ON the host and start the communication program. Set up the communi-
cation parameters to match the 3300. Typical parameters are:
38400 bps
7 bit data
Odd parity
Xon/Xoff flow control