PCI Express Board User’s Manual

Hardware Installation

CP-118EL Dimensions

59.91 mm (2.36 in)

132 mm (5.20 in)

TX1 TX2 Tx3 Tx4 Tx5 Tx6 Tx7 Tx8

 

 

 

 

 

 

 

 

 

RX1 RX2 Rx3 Rx4 Rx5 Rx6 Rx7 Rx8

Mode

 

S1

S2

S3

 

 

 

RS-232

 

 

 

ON

 

 

 

RS-422

 

ON OFF

 

 

 

S1

ON

 

 

 

 

 

 

DIP

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

 

S2

ON

 

 

 

 

 

 

DIP

 

 

 

 

 

 

 

 

MU860

 

1

2

3

4

5

6

7

8

 

S3

ON

 

 

 

 

 

 

DIP

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

 

Mode

 

S1

 

S2

 

S3

 

 

4-WIRE

ON

 

OFF

OFF

 

RS-485

 

 

 

 

 

 

 

 

 

2-WIRE

OFF

 

OFF

OFF

 

RS-485

 

 

 

 

 

 

 

 

46.9 mm (1.85 in)

 

 

 

 

 

 

 

 

121 mm (4.76 in)

51.65 mm (2.03 in)

 

 

 

 

64.41 mm

 

(2.54 in)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: Use JP1/2/3/4/5/6/7/8 to activate the Termination Resistors for ports 1/2/3/4/5/6/7/8. Open Termination Resistor is NOT active

Short Termination Resistor is ACTIVE

DIP Switch Settings (CP-118EL only)

CP-118EL has three onboard DIP Switch arrays, each with 8 switches, shown as follows and on the board (see the above block diagram) as S1, S2, and S3. The switches are used to select one of four serial interfaces—RS-232, RS-422, 4-wire RS-485, 2-wire RS-485—for each of the eight ports. Note that S3 selects between RS-232 and RS-422/485, S2 selects between RS-422 and RS-485, and S3 selects between 2-wire and 4-wire RS-485.

Mode

S1

S2

S3

RS-232

---

---

ON

RS-422

---

ON

OFF

4-Wire RS-485

ON

OFF

OFF

2-Wire RS-485

OFF

OFF

OFF

2-2