Appendix |
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Check the items in the following in the event of operating problems with the RS-232C interface.
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The RS-232C does not operate at all. |
►Is the cable properly connected? ▪ See "RS-232C Cable Connection."
►Is the setting of the RS-232C correct? ▪ See "RS-232C Cable Connection."
►Are all the devices that are connected powered on?
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An attempt to read data using the CALL RECEIVE statement causes the RS-232C bus to hang. |
►Each and every CALL RECEIVE statement must be preceded by a query. ►Is the query transmitted incorrect?
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Although a command was transmitted, the unit did not operate. |
►Use the "*ESR?" query to check the standard event status register for anomalies. ▪ See Chapter1, "1.2 The Status Byte and the Event Registers."
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Even though a number of queries were sent, only one response was received. |
►Has an error occurred? ▪ The response should be read immediately after each query. ▪ To read several responses in one operation, the corresponding queries must be combined into a single line using the message separator.
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An overrun error or a framing error occurs. |
►Is the transfer rate too high? ▪ Reduce the transfer rate.
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Check the items in the following table in the event of operating problems with the LAN interface.
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The LAN does not operate at all. |
►Is the cable properly connected?
►Is the IP address of the unit correctly set? Does it clash the address of other equipment on the same network?
►Are all the devices that are connected powered on?
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The communication is not proper with 10BASE-T LAN |
►Set the delimiter properly. ▪ See Receive and Send Protocols
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Although a command was transmitted, the unit did not operate. |
►Use the "*ESR?" query to check the standard event status register for anomalies. ▪ See Chapter1, "1.2 The Status Byte and the Event Registers."
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Even though a number of queries were sent, only one response was received. |
►Has an error occurred? ▪ The response should be read immediately after each query. ▪ To read several responses in one operation, the corresponding queries must be combined into a single line using the message separator.
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