Emerson Process Management 3420 Carbon Monoxide Alarm User Manual


 
34 Status Indicators
Section 2: Product overview Reference, Installation, and Operations Manual
June 2013 3-9000-743 Rev S
Series 100 Plus Option Board Communication Status Indicators
The Series 100 Plus Option Board includes LEDs to indicate serial Port C receive and transmit
statuses (see Figure 2-21). These indicators are summarized in Tab le 2- 10 .
Figure 2-21 Series 100 Plus Option Board Communication Status LED Indicators
Table 2-10 Series 100 Plus Option Board Communication Status Indicators
Label Description Color Activity Indication
No Activity
Indication
PORT C RX Port C receive status Green LED On Blinking LED Off
PORT C TX Port C transmit status Green LED On Blinking LED Off