Masters and Slaves
Section 4-1
46
4-1
Masters and Slaves
4-1-1
C500 Master
Indicators
Test switch
Transmission
terminals
Mounting Screw
Used to mount Master
to Rack
I/O bus connector
Used to connect Master
to Rack
CONTINUE/STOP switch
Mounting screw
Used to mount Master to
Expansion I/O Rack
Indicators
TR/ERR
Flashes during normal transmission.
Lights for transmission errors.
Goes out for CPU Unit errors (via watchdog timer moni-
toring) or when waiting for I/O table registration.
TEST OK
Lights for normal endings to transmission line tests exe-
cuted via TEST switch.
Remains unlit for errors found in transmission line tests
executed via TEST switch.
END RS CHK
Lit until terminator is found.
Flashes if more than one terminator is found. Refer to 7-7
Slave Unit Numbers with Multiple Terminator.
Goes out if one and only one terminator is found.
LINE ERR
Lights for transmission line errors.
Remains unlit while transmission line remains normal.
Содержание SYSMAC C-series
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Страница 2: ...Wired Remote I O System Manual Revised April 2003...
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