C-more micro EA1-S6ML Hardware User Manual page 164

Appendix A: Panel & PLC Error Code Tables
GE SNPX Protocol– PLC Error Code Tables (cont' d )
A
Panel Error Code
P499 Hex Value
0x2A0C
0x2B0C
0x2C0C
0x2D0C
0x2E0C
0x2F0C
0x300C
0x310C
0x320C
0x330C
0x340C
0x350C
0x360C
0x370C
0x380C
0x390C
0x400C
0x400D
0x400F
(PLC generated error codes for the GE Fanuc 90-30, 90-70 and VersaMax SNPX protocol
continued on the next page.)
A–16
PLC Errors for GE SNPX Protocol (Minor-Major) (cont'd)
An unknown message was received when an acknowledge (ACK or NAK) was required.
Sequence Error. An unexpected SNP message type was received.
Received SNP message contains bad next message length value.
Acknowledge timeout. An acknowledge (ACK or NAK) was not received within the configured T2 time
interval. A slave device may generate this error if the master device has aborted after maximum response
NAKs and does not NAK the next response retry.
Response timeout. The SNP Master did not receive an SNP Response message within the configured T5'
time interval.
Buffer message timeout. An expected Text Buffer or Connection Data message was not received within the
configured T5'' time interval.
Serial output timeout. The CMM module was unable to transmit a Break, an SNP message, or SNP
acknowledge (ACK or NAK) from the serial port. (May be due to missing CTS signal when the CMM
module is configured to use hardware flow control.)
SNP slave did not receive a response from the Service Request Processor in the PLC CPU.
COMMREQ timeout.
The COMMREQ did not complete within the configured time interval.
An SNP Request or Response was aborted prior to completion due to reception of a Break.
PLC backplane communications error
Invalid Piggyback Status data memory type or address.
Communications have not been established.
Invalid SNP Slave SNP ID. Must be a 0-7 ASCII characters, plus a terminating null character (00h). The Null
SNP ID (eight bytes of 00h) may be used to specify any single slave device.
The SNP master has received a response message containing an unexpected data length. Usually indicates
a problem with the remote SNP slave device. May occur when Series 90-70 commands (Task Memory or
Program Block Memory Read/Write) are issued to a Series 90-30 slave device.
Response code in received SNP-X response message does not match expected value. (Response code
must equal the request code +80h.)
SNP-X Response message exceeds maximum data size (decimal 1000 bytes).
Data in the Response is ignored.
A parity error has occurred on an X-Attach Response message when establishing a new SNP-X
communication session. Communications have not been established.
The requested service is not supported by the SNP slave.
Serial output timeout. The slave was unable to transmit an SNP-X message from the serial port. (May be
due to missing CTS signal when the CMM module is configured to use hardware flow control.)
® EA1-MG6-USER-M Hardware User Manual, 1st Ed. Rev C, 09/10
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