Sel SEL-787 - Table 7.10 COM Command; Table 7.11 CONTROL Command

7.22
SEL-787 Relay Instruction Manual Date Code 20150130
Communications
SEL ASCII Protocol and Commands
COMMUNICATIONS Command
The COM x command (see Table 7.10) displays communications statistics for
the M
IRRORED BITS communications channels. For more information on
M
IRRORED BITS communications, see Appendix I: MIRRORED BITS
Communications. The summary report includes information on the failure of
ROKA or ROKB. The
Last error field displays the reason for the most
recent channel error, even if the channel was already failed. We define failure
reasons as one of the following error types:
CONTROL Command (Control Remote Bit)
Use the CON command (see Table 7.11) to control remote bits (Relay Word
bits RB01–RB32). You can use the CON function from the front panel
(
Control > Outputs) to pulse the outputs. Remote bits are device variables
that you set via serial port communication only; you cannot navigate Remote
Bits via the front-panel HMI. You can select the control operation from three
states: set, clear, or pulse, as described in Table 7.12.
➤ Device disabled ➤ Re-sync
➤ Framing error ➤ Data error
➤ Parity error ➤ Loopback
➤ Overrun ➤ Underrun
Table 7.1 0 COM Co mm a n d
Command Description Access Level
COM S A or
COM S B
Return a summary report of the last 255 records in the
communications buffer for either M
IRRORED BITS
communications Channel A or Channel B when only
one channel is enabled.
1
COM A Return a summary report of the last 255 records in the
communications buffer for M
IRRORED BITS
communications Channel A.
1
COM B Return a summary report of the last 255 records in the
communications buffer for M
IRRORED BITS
communications Channel B.
1
COM L A Appends a long report to the summary report of the last
255 records in the communications buffer for
M
IRRORED BITS communications Channel A.
1
COM L B Appends a long report to the summary report of the last
255 records in the communications buffer for
M
IRRORED BITS communications Channel B.
1
COM C Clears all communications records. If both M
IRRORED
B
ITS channels are enabled, omitting the channel
specifier (A or B) clears both channels.
1
COM C A Clears all communications records for Channel A. 1
COM C B Clears all communications records for Channel B. 1
Table 7.11 CONTROL Command
Command Description Access Level
CON RBnn
a
k
b
a
Parameter nn is a number from 01 to 32, representing RB01 through RB32.
b
Parameter k is S, C, or P.
Set a Remote Bit to set, clear, or pulse. 2