Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 518)

G01
Chapter 9B
Integrating Your Teach Pendant
9B-7
Suspend Transmission of Error Messages to the Teach Pendant:
SD1=05
To stop sending error messages to the teach pendant, send a message with
CMD=61 (hex) and SD1=05. For example:
CMD SD1 SD2 SD3 TNS TNS
DLE STX 61 05 00 00 00 06 DLE ETX BCC
The application software responds by ending the transmission of error
messages to the teach pendant.
This request is useful if alternating error messages are being displayed on
the CRT. The teach pendant is sent a message every time the message
toggles on the CRT. This operation uses much of the serial band width.
This is the default at power turn-on.
The control can be commanded to send error messages. It always sends
watchdog signals to the teach pendant. Since these messages are not
individually requested by the teach pendant, they are called unsolicited
messages. These messages send specific data in the DF1 command fields:
Field Description for Unsolicited Messages
CMD 62 hex indicates an unsolicited message
SD1 identifies the message as watchdog signal or error
message
Receiving Watchdog Signals
The control sends this watchdog signal to the teach pendant according to
the time interval specified in PAL flag $TPWDFQ:
CMD SD1 SD2 SD3 TNS TNS
DLE STX 62 01 00 00 00 02 DLE ETX BCC
The teach pendant must respond to the message before the next one is sent
or the watchdog timeout PAL flag is set to true. Here is a recommended
response:
CMD SD1 SD2 SD3 TNS TNS
DLE STX 62 01 00 00 00 01 DLE ETX BCC
9B.6
Receiving Unsolicited
Messages from the Control
(CMD=62 hex)