Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 313)

Appendix
D
Publication 2755-833
Setting Up Terminals
This appendix provides instructions on how to setup and connect the
following terminals to the AUX port of the NEMA Type 1 or Type 4
decoder.
•
Lear Siegler ADM 3E
•
DEC VT100
•
1784-T45
•
1771-T1, -T2, -T3
Pin Abb. Function
1 GND Chassis Ground
2 TD Transmit Data carries data from terminal to decoder. (input to decoder)
3 RD Receive Data carries data from decoder to terminal. (Output from de-
coder)
7 SIG GND Signal Ground
15 AUX Terminal
Selector + AUX Terminal Selector. Determines whether the AUX terminal is used
for configuration or manual data entry. To use the AUX terminal for
manual data entry, tie pin 15 to 16. To use the AUX terminal for configu-
ration, leave pins 15 and 16 open.
16 AUX Terminal
Selector – Connect to pin 15 to use the AUX terminal for manual data entry func-
tions. When connected to 15, you cannot access the configuration
menus.
17
25 IN8+
IN8– Auto Load Input. You can connect a normally opened (N.O.) contact
between pins 17 and 25. Close the contacts to activate the AutoLoad
Function. See Chapter 6 and Appendix H.
Pin Abb. Function
A GND Chassis Ground
B TD Transmit Data carries data from terminal to decoder (Input to decoder).
C RD Receive Data carries data from decoder to terminal (Output from decod-
er).
D SIG GND Signal Ground
G AUX Terminal
Selector + AUX Terminal Selector. Determines whether the AUX terminal is used
for configuration or manual data entry. To use the AUX terminal for
manual data entry, tie pin G to H. To use the AUX terminal for configura-
tion, leave pins G and H open.
H AUX Terminal
Selector – Connect to pin G to use the AUX terminal for manual data entry func-
tions. When connected to G, you cannot access the configuration me-
nus.
K
L
IN8+
IN8– Auto Load Input. You can connect a normally opened (N.O.) contact
between pins K and L. Close the contacts to activate the AutoLoad
Function. See Chapter 6 and Appendix H.
Appendix Objectives
Connecting Terminal to
AUX Port on NEMA Type 1
Decoder
AUX PORT (female) Connector
1
14
13
25
Connecting Terminal to
AUX Port of NEMA Type 4
Decoder
C
D
B
E
P
A
S
N
M
F
G
U
L
H
K
T
J V
R
AUX PORT (male) Connector