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Sect
ion 3
CompoN
et
Communic
a
tions
Spec
if
ic
at
ions
E3NW-CRT
User’s Manual
Section 3
CompoNet Remote I/O Communications
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Command Timing Chart
Read, Write, or Execute Command Is Normally Processed
A: Turn ON the TRIGGER signal from the host. (Set the Unit Number, Sensor Channel, Command
Code, and Command Data at the same time as you turn ON the TRIGGER signal.)
B: When the Sensor Communications Unit detects the ON TRIGGER signal from the host, it turns
ON the BUSY signal.
C: When command processing is completed, the Sensor Communications Unit turns ON
NORM_RES.
Read the Read Data at this time.
For a continuous detection level read command, the read data (i.e., the detection level) will be
overwritten continuously in this state.
Do not turn OFF the TRIGGER signal at this point.
D: After processing is completed, turn OFF the TRIGGER signal.
E: When the TRIGGER signal is turned OFF, the BUSY and NORM_RES signals also turn OFF.
F: After the BUSY and NORM_RES turn OFF, the next command execute signal is turned ON.
G: BUSY and NORM_RES will remain ON until the host turns OFF the TRIGGER signal.
Read, Write, or Execute Command Processing Is Failed
A: Turn ON the TRIGGER signal from the host. (Set the Unit Number, Sensor Channel, Command
Code, and Command Data at the same time as you turn ON the TRIGGER signal.)
B: When the Sensor Communications Unit detects the ON TRIGGER signal from the host, it turns
ON the BUSY signal.
C: If an error occurred, ERR_RES and the corresponding error flag turn ON.
D: The host checks the error flag and turns OFF the TRIGGER signal.
E: When the TRIGGER signal is turned OFF, the BUSY and ERR_RES signals also turn OFF.
F: When the host detects that the BUSY and ERR_RES are turned OFF, it turns ON the next
TRIGGER signal.
G: BUSY and ERR_RES will remain ON until the host turns OFF the TRIGGER signal.
