Automation Direct C-more EA1-T4CL Hardware User Manual page 158

GE SNPX Protocol– PLC Error Code Tables (cont' d )
Panel Error Code
P499 Hex Value
0x2A0C An unknown message was received when an acknowledge (ACK or NAK) was required.
0x2B0C Sequence Error. An unexpected SNP message type was received.
0x2C0C Received SNP message contains bad next message length value.
Acknowledge timeout. An acknowledge (ACK or NAK) was not received within the configured T2 time
0x2D0C 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'
0x2E0C
time interval.
Buffer message timeout. An expected Text Buffer or Connection Data message was not received within the
0x2F0C
configured T5'' time interval.
Serial output timeout. The CMM module was unable to transmit a Break, an SNP message, or SNP
0x300C 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.)
0x310C SNP slave did not receive a response from the Service Request Processor in the PLC CPU.
COMMREQ timeout.
0x320C
The COMMREQ did not complete within the configured time interval.
0x330C An SNP Request or Response was aborted prior to completion due to reception of a Break.
0x340C PLC backplane communications error
Invalid Piggyback Status data memory type or address.
0x350C
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
0x360C
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
0x370C 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
0x380C
must equal the request code +80h.)
SNP-X Response message exceeds maximum data size (decimal 1000 bytes).
0x390C
Data in the Response is ignored.
A parity error has occurred on an X-Attach Response message when establishing a new SNP-X
0x400C
communication session. Communications have not been established.
0x400D 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
0x400F
due to missing CTS signal when the CMM module is configured to use hardware flow control.)
PLC generated error codes for the GE Fanuc 90-30, 90-70 and VersaMax SNPX protocol
continue on the next page.
®
PLC Errors for GE SNPX Protocol (Minor-Major) (cont'd)
EA1-TCL-M Hardware User Manual, 2nd Ed., 10/10
Appendix A: Panel & PLC Error Code Tables
Description
A
A–17