Control Microsystems SCADAPack 350, Hardware Manual

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RJ-45 Modular Jack
1. +5V
2. DCD/ Test1
3. DTR/ Test2
4. GND
5. RxD
6. TxD
7. CTS
8. RTS
2 1 8 7 6 5 4 3
Figure 13: RJ-45 Connector Pinout
Notes:
•
+5V is available on Pin 1 when turned on by the user under program control or, provided
jumpers J15, J16 have their jumper links in the “Vision” position, when the SCADAPack 350
detects the contact closure of the ON switch of the SCADAPack Vision or the LEDs are turned
on.
Warning: This 5V output is used to power Vision terminals and other Control Microsystems
accessories. DO NOT apply 5V to this pin. Ensure that cables connecting this pin do not have
any voltage.
•
The SCADAPack Vision ON switch is wired to Pins 2 and 3. It is important that when a
SCADAPack Vision is not used that jumpers J15, J16 have their jumper links in the “Normal”
position, to avoid generating a CPU interrupt due to a change in the state of the DCD signal.
•
The transmitters used in COM3 generate RS-232 compatible
±
5V levels. Cables should be
limited to a maximum of 10 ft (3m).
The following table provides a description of the function of each pin of the RJ-45 connector. In this
table a MARK level is a voltage of +3V or greater and a SPACE level is a voltage of –3V or lower.
Pin Function Description
1 5V
(Output)
+5V power for the SCADAPack Vision.
Warning:
This 5V output is used to power Vision terminals
and other Control Microsystems accessories. DO NOT apply
5V to this pin. Ensure that cables connecting this pin do not
have any voltage.
2 DCD /
Test1
(Input)
With jumper links of J15, J16 in the “Norm.” position, used as
DCD signal.
With jumper links of J15, J16 in the “Vision” position, used to
detect SCADAPack Vision ON switch closure.
3 DTR /
Test2
(Output)
With jumper links of J15, J16 in the “Norm.” position, used as
DTR signal.
With jumper links of J15, J16 in the “Vision” position, used to
detect SCADAPack Vision ON switch closure.
4 GND This pin is connected to the system ground.
5 RxD The level is SPACE on standby and MARK for received data.
SCADAPack 350 Hardware Manual
February 14, 2007 33