LINKUP 5294 WITH DL5294 FIRMWARE
86
NOTE
A similar table is accessible during Connect Mode by typing <?> in response to the
Enter LU Number prompt.
To interpret the information contained in this table, refer to the following definitions:
•
LU Type —
Corresponds to the system LU Type 7 (display) or 4 (SCS printer).
•
Status —
The operating state of each LinkUp 5294 LU; for example, P for an LU which is pending
disconnection, D for an LU which is disconnected, I for one being used, R for one that has been
disconnected but can be reconnected, and U for an undefined LU.
• Sync Port —
Refers to the synchronous port each LU is assigned to, such as Port 0 or 1.
•
Sync Link # —
The SDLC Link Number each LU has been associated to within its assigned
synchronous port; for example, Link 0 or 1.
•
LSID —
The System/3X Local Station ID number associated with the LinkUp 5294 LU; for example,
any value from 0 to 9, 0A to 0F.
•
Async Port —
The asynchronous port which the LU is coupled with; Port 2 through Port 33.
9.3 Finding and Identifying Problems
For assistance in troubleshooting the LinkUp 5294, see the list below. Common problems are listed
in bold, followed by possible solutions.
A directly attached terminal does not communicate with the LinkUp 5294:
1. Verify that the terminal in question is optioned compatibly with the settings of the LinkUp 5294
port it is attached to. That is, set the terminal’s bit rate, parity, on-line mode, char. mode, full duplex,
DTR on, DSR off, etc., to match the settings specified for the LinkUp 5294.
2. Make sure the RS-232C cable is connected to the proper port of the terminal, usually labeled as
COM or MODEM.
3. Check the front-panel signal LEDs on the LinkUp 5294 to be sure RTS, CTS, DTR, DSR and CD
are on. If this is not true:
A. Confirm that the attaching cable supports at least Pins 1–8 and 20.
B. Verify that the cable is not a crossover or modem cable.
C. Swap the cable in use with one known to be in working order.
4. Make sure the asynchronous port is optioned for DCE; that is, that it is a direct connection.
Verify that the flat reversible cable of the I/O card is also installed for a DCE interface
(the DCE label should be visible).