Miranda Camera Co KALEIDO-K2 RS-422 Multi-drop Cable Example, 3 RS-422 Serial ID Assignment

GUIDE TO INSTALLATION AND OPERATION

4.5.2 Controlling multiple Kaleido-K2s using RS-422 with a Kaleido-RCP

Using the RS-422 communication port also allows up to 99 daisy-chained Kaleido-K2 frames to be controlled using only one Kaleido-RCP. With a multi-drop cable, this port directs communication between a series of Kaleido-K2 frames and the Kaleido-RCP. Figure 4.5.1.2 illustrates cabling between the Kaleido-K2s and Kaleido-RCP.

RS-422 Multi-drop Cable Example

Notes:

1:For pins 2/7 and 3/8, using Belden 8162 or similar is recommended, 24AWG.

2 Twisted Pairs individually shielded, both GND and the Overall foil connected to pin 1

2:For PINS 4 and 5, wires should be 20AWG.

3:As illustrated, it is strongly recommended to get 12V required for the RCP from an external DC supply or AC/DC adaptor. It shall deliver 3W or more (250mA or more). The distance between the supply and the RCP should be the shortest possible.

	Device #1:	Device #2:
	Kaleido-Classic,	Kaleido-Classic,
	Kaleido-K2,	Kaleido-K2,	Device #3:
Kaleido-RCP	Kaleido-Alto	Kaleido-Alto	Tango
	or Kaleido-Quad	or Kaleido-Quad

4:As illustrated, the Tango has Tx and Rx signals located at different pins than other Kaleido products.

Device #4:	Device #n:
Kaleido-Classic,	Kaleido-Classic,
Kaleido-K2,	Kaleido-K2,
Kaleido-Alto	Kaleido-Alto
or Kaleido-Quad	or Kaleido-Quad

DE9-M			DE9-M		DE9-M	Pair 5	DE9-M		DE9-M
Tx-	2	Pair 1	2	Pair 3	2		8	Pair 7	2
Tx+	7	GND shield	7	GND shield	7	GND shield	3	GND shield	7
	1	(overall shield)	1	(overall shield)	1	(overall shield)	1	(overall shield)	1
		Foil		Foil		Foil		Foil
	3	GND shield	3	GND shield	3	GND shield	7	GND shield	3
Rx+
Rx-	8	Pair 2	8	Pair 4	8	Pair 6	2	Pair 8	8

GND	4	External DC
+12V	5	power supply
		or AC/DC
		adaptor

DE9-M

2

7

1

3

8

120Ω

120Ω

Figure 4.5.1.2 Kaleido-K2/Kaleido-RCP interconnection for cascading multiple frames

As indicated in figure above, a 120Ω termination resistor must be installed on the cable connector on the last Kaleido-K2 frame. In a point-to-point connection, it must be installed on the receiver (refer to figure 4.5.1); for a more-than-one-Kaleido-K2 frame connection (called a “multi-drop connection”), it must be installed on receiver and driver. For more details, consult Miranda Application Note #229-99T00-101 (available through Technical Support).

4.5.3 RS-422 Serial ID Assignment

In order to respond to commands, each Kaleido frame must be recognized by the Kaleido-RCP. This can be accomplished by assigning an identification code to each of the Kaleido-K2 frames. This is similar to assigning different addresses to buildings on a street.

By default, Kaleido-RCP will send instructions using RS-422 protocol to ID 1. This means that a system comprised of only one Kaleido-K2 frame will work out of the box as each frame’s default ID is also set to 1. However, for applications where more than one Kaleido-K2 frame is used, you will need to assign a unique ID number to each of them. Consult the Kaleido software User’s Manual for details.

Kaleido K2 21