Asynchronous Terminals and Printer Processes Programming Manual

PRINTER PROGRAMMING CONSIDERATIONS
Error Handling
Table 7-4. 5515/5516 Errors (continued) |
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Error Error |
Number Name Meaning |
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139 CONTROLLER ERROR 1. Parity occurred on status |
returned on the asynchronous |
controller, or |
2. Character overrun occurred |
on the asynchronous |
controller, or |
3. Invalid interrupt status |
returned on the asynchronous |
controller. |
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140 MODEM ERROR 1. Communication link was not |
established, or |
2. Modem failure or |
3. Momentary loss of carrier or |
4. Modem disconnect or |
5. Link disconnect occurred. |
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190 DEVICE ERROR 1. Invalid status returned from |
printer, or |
2. Hardware fault occurred. |
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191 DEVICE POWER ON Printer power-on has occurred. |
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218 INTERRUPT TIMEOUT WRITE request timed out waiting |
for a completion interrupt. |
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DATA PARITY ERROR recovery |
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The I/O process can perform automatic parity error recovery for |
the 5515/5516 printers when a parity error is detected in data |
sent to the printer or in status data returned from the printer. |
However, if the parity error persists after the retry count is |
exhausted, the software no longer attempts to recover. |
November 1987 7-29