Manual

DF1 Diagnostic Command Support
Appendix B
B-2
Diagnostic Read
This command reads the diagnostic counters from the Communications
Controller. The format of these counters is given below. The address and
size fields can have any value (but they must be included).
Figure B.3
Diagnostic
Read Command Format
1 byte 1 byte 2 bytes 1 byte 2 bytes 1 byte
CMD
06
STS TNS FNC
01
ADDR
0000
SIZE
00
Figure B.4
Diagnostic
Read Reply Format
1 byte 1 byte 2 bytes 10 bytes
CMD
46
STS TNS DATA
Table B.B contains the diagnostic read reply values for the Smart
Transmitter Interface:
Table B.B
Diagnostic
Read Reply V alues
1 Total RS232C packets received, low byte
2 Total RS232C packets received, high byte
3 Total RS232C packets transmitted, low byte
4 Total RS232C packets transmitted, high byte
5 Number of RS232C retries
6 Number of RS232C packets where the retry limit was exceeded
7 Number of RS232C NAKs sent
8 Number of RS232C NAKs received
9 Number of RS232C bad messages received
10 Number of RS232C line errors
Diagnostic Status
This command requests a block of status information from a RS-232C
device. The reply contains the information in its DATA field. The status
information varies from device to device. The Communications
Controller’s status block is given in Table 4.J.