External communications
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The system works as follows:
. Output not activated: the head cannot print (red)
. Output activated: The head is ready to print (green)
Ƒ Head 2 ready to print alarm: operates in the same way as the alarm for head 1
Three different types of outputs are available for each of these alarm signals:
Ƒ Optocoupled outputs: OPTOGENE / OPTOT1 / OPTOT2 on connectors B1, B2 and
B3 respectively.
Ƒ Outputs on relays: GENE / T1 / T2
Each relay output consists of a common ( COMT1, COMT2, COMGE ), a normally-open
dry contact (T1-, T2-, GENE- ) and a normally-closed dry contact (T1+, T2+, GENE+ ) .
Maximum specifications for these contacts are:
1A rms current at rms voltage of max. 24V.
There is an RC filter between all contacts and their respective common to limit any
disturbance caused by a load connected to them during switching operations. Signal
connections are made on terminal block B4.
Green LEDs are used to display "General fault" and "Head ready to print" status.
Ƒ Outputs on connector J15 for connecting an alarm on socket A at the back of the
printer: GREEN / AMBER / RED.
Ŷ Serial links
The printer can be controlled via an RS232 or RS422 serial link. Full information on
configuring these links and the communication protocol used is given in the Markem-Imaje
9040 serial and parallel link manual (#Manual).
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