Mx104 Alarm Contact Port Specifications; Cable Specifications; Port Pinouts; Table 60: Mx104 Alarm Contact Port Cable Specifications - Juniper MX104 Hardware Manual

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MX104 Alarm Contact Port Specifications

Cable Specifications

Port Pinouts

Table 61: Alarm Contact Connector Pinouts

Pin
Number Signal Definition
1 ALARM_IN0_NO/NC
2 ALARM_IN1_REF
3 ALARM_IN2_NO/NC
Copyright © 2017, Juniper Networks, Inc.
MX104 Routing Engine Overview on page 21
Initially Configuring the MX104 Router on page 129
Table 60 on page 87 lists the specifications for the cables that connect to the
port.

Table 60: MX104 Alarm Contact Port Cable Specifications

Specification
Cable
Wire gauge
Router receptacle
You can independently configure alarm input ports (0 to 3) to operate in Normally Open
or Normally Closed mode, and to trigger a red alarm condition or a yellow alarm condition,
or to ignore alarm conditions.
You can independently configure alarm output ports (0 and 1) to relay alarm information
when the system condition goes to a red or yellow alarm condition and when the alarm
output port is configured to trigger based on alarm input condition. Alarm output ports
(2 and 3) are used to indicate major and minor system alarms and are normally in open
mode.
Table 61 on page 87 shows the alarm contact connector pinouts.
Direction CLI Port Mapping
Input Input Alarm Port 0
Input Input Alarm Port 1
Input Input Alarm Port 2
Chapter 9: Port Cable and Pinout Specifications
Value
DE-15 alarm cable
2
Between 20 AWG (0.52 mm ) and 14 AWG (2.08 mm
15-pin D-type
Function
External alarm input 0 (if voltage on this pin is
between 24V to 72V with reference to Pin 6,
alarm input 0 is in closed condition)
External alarm input 1 (Reference for Pin 7)
External alarm input 2 (if voltage on this pin is
between 24V to 72V with reference to Pin 8,
alarm input 2 is in closed condition)
ALARM
2
)
87