CHAPTER 2: QUICK START
SNAP PAC S-Series User’s Guide
25
PAC S1 SERIAL WIRING DIAGRAMS
NOTE: SNAP-PAC-S1 controllers support only 2-wire RS-485.
Make sure to verify the location of pin 1, which is
indicated on the controller with a label or a small triangle.
To be certain of pin 1’s locations, insert the connector into
the controller and then mark the location of pin 1 on the
connector itself.
Wiring a PAC S1 Controller to SB-Series Brains
Wiring a PAC S1 Controller to B3000
mistic
Brains with an Interrupt Line
Pin 1
TX/RX +
TX/RX –
COM
TX/RX +
TX/RX –
COM
2-wire termination, end of link
Switches 3 & 2 OFF
Switch 1 ON
1 2 3
ON
1 2 3
ON
2-wire, middle of link
All switches OFF
Chassis GND
TX/RX +
TX/RX –
COM
1
2
3
4
5
6
7
8
9
10
PAC S1
PAC SB
PAC SB
Chassis GND
TX/RX +
TX/RX –
COM
+
IRQ +
IRQ –
1
2
3
4
5
6
7
8
PAC S1
B3000
B3000
NOTE: To set bias and termination on a
B3000-B, see Opto 22 form 1927
,
Содержание SNAP PAC S Series
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