NT-2000 REF Manual
Installation
7-14
7.3.2. Connector Pin Assignments and Connections
(
continued
–
8/8
)
⑨
I / O DATA
Connector
The
I / O DATA
port is primarily for data communications with other onboard
devices using IEC 61162–1 (NMEA–0183) as the interface. It also provides a port
(comprising pins #4, #5 and #6) for software updating, and a regulated 12V DC
200mA output for powering light–duty applications.
Figure 7-15
I/O DATA
Connector Pin Assignments (Front View)
・
Mating Plug: FM14–8P (supplied)
< WA R N I NG S >
1. PINS #4, #5 AND #6 ARE TO BE USED EXCLUSIVELY FOR THE SPECIFIED
PROGRAMMING TOOL. CONNECTING ANY OTHER DEVICE TO THESE PINS
CAUSES THE EQUIPMENT TO BE LOCKED UP.
2. CURRENT DRAIN FROM PIN # 7 MUST NOT EXCEED 200 MILLIAMPS.
⑩
ALARM
Output Connector
The ALARM output connector provides an on/off (make/break) alarm output
simultaneously via two pairs of replay contacts, electrically isolated from each other
and from the equipment circuitry. This connector is to be used to activate an alarm
device mounted at a remote location. The pin assignments are given below.
To connect an external alarm device, use pins #1–#2 pair or pins #3–#4 pair.
Figure 7-16
ALARM
Output Connector Pin Assignments (Front View)
・
Mating Plug: FM14–4P (supplied)
NOTE: Alarm messages compliant with IEC 61162–1 $CRARL sentence format are
available from the RS–422 port, and not from this connector.
Pin #1 (Alarm 1)
Pin #2 (Alarm 1)
Pin #3 (Alarm 2)
Pin #4 (Alarm 2)
# 1 (
IEC 61162 In +
), Sig. Line A
# 2 (
IEC 61162 In
– ), Sig. Line B
# 3 (
IEC 61162 Out +
), Sig. Line A
# 4 (
Reserved for software updating
)
# 5 (
Reserved for software
updating
)
# 6 (
Reserved for software
updating
)
Pin # 7 (
+12V, 200 mA
)
# 8 (
IEC 61162 Out
–
) ,
S. Line B