Instruction/ maintenance manual of the product RS-422 Black Box
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RS-232 ↔ RS-422 INTERF ACE CONVER TER 1 FEDERAL COMMUNICA TIONS COMMISSION AND INDUSTR Y CANADA RADIO FREQUENCY INTERFERENCE ST A TEMENTS This equipment generates, uses, and can radiate radio-freque.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 2 INSTRUCCIONES DE SEGURIDAD (Normas Oficiales Mexicanas Electrical Safety Statement) 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 3 TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the pr operty of the trademark owners.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 4 Contents Chapter Page 1.Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. Introduction . . . . . . . .
RS-232 ↔ RS-422 INTERF ACE CONVER TER 5 1. Specifications Speed — 64,000 bps, max. Connectors — RS-232 port: DB25 female; RS-422 port: DB37 female Indicators — 7 LEDs show status of RS-232 and RS-422 signals and indicate power ON.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 6 2. Introduction The RS-232 ↔ RS-422 Inter face Converter provides bi-directional synchronous or asynchronous conversion of all commonly used RS-232 and RS-422 signals.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 7 1. The Converter does not require special handshaking signals in order to operate. 2. The Converter should always be configured the opposite of the equipment it’ s connected to if straight-through cabling is used.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 8 3. Installation T o connect the Converter to your devices, follow these steps: 1. Attach the cable from the RS-422 device to the 37-pin female receptacle on the rear panel of the Converter . 2. Attach the cable from the RS-232 device to the 25-pin female receptacle on the rear panel of the Converter .
RS-232 ↔ RS-422 INTERF ACE CONVER TER 9 Figure 3-1. Board Layout Showing Component Locations. (Dashed Lines show DTE/DCE DIP Shunt Locations.) AC POWER CONNECTOR RS-422 CONNECTOR RS-232 CONNECTOR DI.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 10 Figure 3-2. Sample DIP-Shunt Setting. Figure 3-2 shows the DIP-shunt settings used for an application like the one illustrated in Figure 3-3a. NOTE The filled-in rectangles in Figure 3-2 indicate the jumpers that contain a DIP-shunt.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 11 Figures 3-3a and 3-3b show some typical synchronous applications. Figure 3-3. Synchr onous Applications. Applications involving asynchronous devices are also possible. Figure 3-4 illustrates a popular asynchronous setup, while Figure 3-5 shows the cabling involved.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 12 T HE R ECEIVER T ERMINA TION S WITCH This switch is marked S1 on the printed circuit-board diagram in Figures 3-1 and 3-2. This switch ser ves to terminate the receiver with pull-up and pull-down resistors in order to designate the receiver state and enable the Converter’ s anti-streaming function.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 13 Figure 3-5. Signal Flow Diagram A. RS-232 (Port is DTE) RS-422 (Port is DCE) 12 Terminal Ready A (-) 30 Terminal Ready B (+) DTR 20 CR8 (RS-422 DSR LED) 11 2.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 14 Figure 3-6. Signal Flow Diagram B. RS-232 (Port is DCE) RS-422 (Port is DTE) 12 Terminal Ready A (-) 30 Terminal Ready B (+) DTR 20 CR8 (RS-422 DSR LED) 11 2.
RS-232 ↔ RS-422 INTERF ACE CONVER TER 15 4. Ground Strap and Inter face Pinouts Signal grounds (Pins 19, 20, and 37 on the RS-422 inter face and Pin 7 on the RS-232 inter face) are connected together , but not connected to chassis ground (Pin 1).
1000 P ark Drive • Lawrence, P A 15055-1018 • 724-746-5500 • F ax 724-746-0746 © Copyright 1998. Black Box Corporation. All rights reserv ed..
An important point after buying a device Black Box RS-422 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Black Box RS-422 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Black Box RS-422 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Black Box RS-422 you will learn all the available features of the product, as well as information on its operation. The information that you get Black Box RS-422 will certainly help you make a decision on the purchase.
If you already are a holder of Black Box RS-422, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Black Box RS-422.
However, one of the most important roles played by the user manual is to help in solving problems with Black Box RS-422. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Black Box RS-422 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
