34
2-1 Nomenclature
CQM1-G7M21 Master
Front View
Terminal screws: M3
(Optimum tightening torque: 0.5 N S m)
Transmission terminal
(Refer to 3-1 Transmission Cables)
For connection of transmission
cable to Expansion Master or
Slave.
Indicators (see following table)
ALM output terminals
(Refer to 3-2 External Output
Connection Cables)
Terminals shorted if an error oc-
curs in the output of a unit with
error detection function
(G730-ROC04-A).
Transmission Ready terminals
(Refer to 3-2 External Output
Connection Cables)
Terminals shorted while in trans-
mission status with power on.
Read signal at CPU and confirm
transmission ready status be-
fore enabling data.
Refer to 4-2 Handling Power
On. The output from these ter-
minals linked to ON/OFF status
of the T/R RDY indicator.
+
–
Name Color Function
RDY Unit Ready Green Lit when power is on and if
CQM1H/CQM1 recognizes a Master.
IN 1CH IN Mode Orange Lit while number of inputs set to 1
word (16 points). Not lit when set to 2
words (32 points).
OUT 1CH OUT Mode Orange Lit while number of outputs set to 1
word (16 points). Not lit when set to 2
words (32 points).
T/R RDY Transmission
Ready
Green Lit while in transmission status with
power on. Not lit while in transmission
error.
HOLD HOLD Setting Orange Lit while DIP switch set to HOLD (data
held when a transmission error
occurs).
T/R Transmitting Red Flashes while searching for terminator
or during transmission with power
turned on. Lit when there is a
transmission error. Not lit when there
is an error in the Master.
END Terminator Red Lit when the power is turned on. Goes
out when the terminator is found.
Flashes when multiple terminators are
present.
NODE Slave Setting
Error
Red Lit when Slave set to #28 to #30.
Flashes for other address setting error
(refer to Appendix B Troubleshooting
for details).
ALM Slave Alarm Red Lit after error occurs with Slave output
(G730-ROC04-A).
Indicators
Nomenclature Section 2-1
To Next Page
Loading...
