Signal Designation; Pin Layout - HEIDENHAIN iTNC 530 HSCI Technical Manual

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Signal designation

One must differentiate between the following types of lines and their signals:

Control and signal lines:

• DCD (Data Carrier Detect):

Received signal level. The receiver signals that the information it has

received lies within the defined level. The DCD signal is not used by the

iTNC. The iTNC delivers no signal from this pin.

• DTR (Data Terminal Ready):

iTNC ready / not ready for service (e.g. the receiving buffer is full, the

signal DTR indicates "LOW").

• DSR (Data Set Ready):

Peripheral device ready / not ready for service.

• RTS (Request to Send):

Switch transmission unit on. iTNC wishes to transmit data.

• CTS (Clear to Send):

Readiness for transmission. The peripheral wishes to transmit data.

Ground conductors (lines for power supply):

• Chassis GND:

Housing connection

• Signal GND:

0 V lines for all signals

Keep in mind that there might be a difference between the pin layout of the

MC 42x(B) and the adapter block.

10.6 iTNC Serial Data Interfaces

Transmitted data

Received data