Product Manual

Using the Data Port

Pin 11 on the data port is the RS-232 level nurse call signal and pin 5

or 10 is ground (see Table 1 on page 48). When there is no alarm

condition, the voltage between pins 10 and 11

is -5 to -12 VDC.

Whenever the N-560 is in an alarm condition, the output between

pins 10 and 11 is +5 to +12 VDC. This is the default condition

(normally low). There is a service menu to change the default

condition. Refer to the N-560 service manual for the procedure.

Pins 7 and 15 provide a relay that closes when an alarm is sounding

the N-560. Pins 8 and 15 provide a relay that opens when an

alarm is sounding. Pin 15 is a common lead for both relays.

Note: When the relay is closed there is approximately 27 ohms of

esistance.

Setting Nurse Call RS-232 Polarity

The nurse call polarity can be set to a high signal on an N-560 alarm

condition or a low signal on an N-560 alarm condition. Refer to the

N-560 service manual for setting the Nurse Call RS-232 polarity.

Setting Nurse Call Relays Normally Open/Closed

Data port pins 7 and 15 provide a relay that closes (nominally

27 ohms) when an alarm is sounding on the N-560. Pins 8 and 15

ovide a relay that opens when an alarm is sounding. Pin 15 is a

common lead for both relays. The relay operates whether the N-560

is operating on AC power or battery.