P
ORTA
C
OUNT
®
Plus Model 8020 Technical Addendum
revised 7-27-2001
TSI Incorporated, St. Paul, Minnesota, USA
10
Copyright © 2001 all rights reserved
DATA and ACCESSORY PORT PIN ASSIGNMENTS
The P
ORTA
C
OUNT
Plus features bi-
directional RS-232C communications
through the Data Port. The Accessory
Port is used to interface with the N95-
Companion accessory.
The P
ORTA
C
OUNT
Plus Data Port uses a
modular RJ-45 connector with 8
contacts. The contacts are numbered 1
through 8 from left to right when viewed
as shown.
The P
ORTA
C
OUNT
Plus Accessory Port
"ACCY" is a 6-pin MMJ modified
modular connector. Contact 1 is on the left when viewed as shown.
Data Port Pin Assignments
Contact
Number
Function
Direction
1
Not used
2
Ready (DTR)
From P
ORTA
C
OUNT
Plus
3
Receive data (Rx)
To P
ORTA
C
OUNT
Plus
4
Not Used
5
Transmit data (Tx)
From P
ORTA
C
OUNT
Plus
6
Not Used
7
Signal Ground (G)
8
Clear to send (CTS)
To P
ORTA
C
OUNT
Plus
PortaCount Accessory Port Pin Assignments (use TSI cable 1303522)
Contact
Number
Function
Comment
1
Ground (-)
2
+ 5 VDC
Supply voltage for all circuits
except solenoid valve
3
N95 Attach Sense
Pull to ground to signal that
N95-Companion is attached
4
+ 5 VDC Solenoid valve
voltage feed
High current supply for
solenoid valve only
5
Solenoid valve control
0.0 VDC = sample from
sample tube
5.0 VDC = sample from
ambient tube
6
Not used
Data Port
ACCY Port
