Instruction/ maintenance manual of the product IC171C Black Box
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RS422/485 SERIAL INTERF ACE PLUS FEDERAL COMMUNICA TIONS COMMISSION AND INDUSTR Y CANADA RADIO FREQUENCY INTERFERENCE ST A TEMENTS This equipment generates, uses, and can radiate radio frequency energ.
RS422/485 SERIAL INTERF ACE PLUS NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY ST A TEMENT INSTRUCCIONES DE SEGURIDAD 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.
RS422/485 SERIAL INTERF ACE PLUS 11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como se indique en el aparato. 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.
RS422/485 SERIAL INTERF ACE PLUS Contents Chapter Page 1. Specifications....................................................................................................1 2. Introduction .............................................................
1 CHAPTER 1: Specifications Number of Ports — Single RS-485/422 Speed — IC050C: 115.2 Kbps; IC171C: 460.8 kbps and higher RS-485 Operation — 2- or 4-wire Connectors — DB25P Maximum Distance — Up to 5000 ft. (1524 m) Communications Chip — IC050C: 16550 UART; IC171C: 16950 UART MTBF — >150,000 hours MTTR — <0.
2 RS422/485 SERIAL INTERF ACE PLUS 2.1 Overview The RS422/485 Serial Interface Plus is an easy-to-use RS-485 interface for your PC. It incorporates unique hardware circuitry that enables the RS-485 interface to appear to be an RS-232 interface, requiring no additional software drivers.
3 CHAPTER 2: Introduction 2.3 Features Listed below are the special features your Serial Interface Plus offers. • Single-channel RS-485/422 adapter for Windows, OS/2, Windows NT, and DOS communications. • Addressable as COM1: through COM4: or twelve other pre-selected address options.
4 RS422/485 SERIAL INTERF ACE PLUS RS-530 and RS-449 RS-530 and RS-449 (EIA-530 and EIA-449) are similar to RS-422 and RS-485 in the fact that they are differential interfaces, but these two standards provide a specified pin-out that defines a full set of modem control signals that can be used for regulating flow control and line status.
5 CHAPTER 2: Introduction This interface is ideal for multi-drop or network environments. The RS-485 tri-state driver (not dual-state) will allow the electrical presence of the driver to be removed from the line. The driver is in a tri-state or high-impedance condition when not active.
6 RS422/485 SERIAL INTERF ACE PLUS NOTE Be sure to set the address selections and jumper options before installation. The RS422/485 Serial Interface Plus occupies 8 consecutive I/O locations, and looks to the PC as a standard serial port. DIP switch SW1 sets the port address options.
7 CHAPTER 3: Address Selection Figure 3-1. DIP Switch SW1. Address 3F8 Hex. 1 2 3 4 ON OFF ABCD.
8 RS422/485 SERIAL INTERF ACE PLUS NOTE Be sure to set the address selections and jumper options before installation. The RS422/485 Serial Interface Plus contains several jumpers that must be set for proper operation. E1: This header selects the interrupt request for the RS422/485 Serial Interface Plus.
9 CHAPTER 4: Option Selection Figure 4-2. Header E1 Optional Windows 3.1 Configuration. IRQ 10 selected. (Refer to Chapter 6 for more infor mation.) NOTE IRQ 2 on AT class machines is not available. IRQ 9 is substituted in place of IRQ 2. To select IRQ 9, place the jumper on the IRQ 2 position.
10 RS422/485 SERIAL INTERF ACE PLUS Figure 4-4. Header E2 in Shared Mode. Header E5 is used to control the RS-485 enable/disable functions for the driver circuit. One of the unique features of the RS422/485 Serial Interface Plus is its ability to be RS-485 compatible without the need for special software or drivers.
11 CHAPTER 4: Option Selection Header E3 is used to control the RS-485 enable/disable functions for the receiver circuit. The RS-485 “Echo” is the result of connecting the board’s receiver inputs to the transmitter outputs. Every time a character is transmitted it is also received by the board.
12 RS422/485 SERIAL INTERF ACE PLUS DIP shunt E4 selects the pin out for the DB25 connector P3. With the 5-position shunt in the EIA-530 mode, the RS422/485 Serial Interface Plus complies with the EIA.
13 CHAPTER 4: Option Selection Signal Name Pin # Mode GND Ground 7 TDB TX+ Transmit Positive 24 Output RS-422 TDA TX- Transmit Negative 25 Output RS-422 RDB RX+ Receive Positive 12 Input RS-422 RDA RX.
14 RS422/485 SERIAL INTERF ACE PLUS Figure 4-11. DIP Switch SW2. 1 2 3 4 ON OFF 5 L L P P T.
15 CHAPTER 5: Installation IMPOR T ANT You MUST set up the operating system BEFORE you physically install the Card. 5.1 Software Installation If you are installing an ISA adapter in DOS, OS/2 ® , or QNX, please refer to the appropriate directory on one of the Serial Utilities Disks for instructions.
16 RS422/485 SERIAL INTERF ACE PLUS NOTE Be sure to set the address selections and jumper options before installation. 1. Turn off PC power. Disconnect the power cord. 2. Remove the PC case cover. 3. Locate an available slot and remove the blank metal slot cover.
17 CHAPTER 6: Windows 3.1 Configuration To configure the RS422/485 Serial Interface Plus under Windows 3.1, open the “Control Panel,” which is typically found in the “Main” Program Group. Next, open the “Ports” selection under the Control Panel.
18 RS422/485 SERIAL INTERF ACE PLUS The next step is to select the appropriate Baud Rate, Data Bits, Parity, Stop Bits, and Flow Control. If you wish to select an IRQ or address different from the default, click on the “Advanced” button.
19 CHAPTER 6: Windows 3.1 Configuration Select “OK” for all windows after you have made your selection. The following message should appear: If you wish to configure another COM Port setting, select the “Don’t Restart Now” button and repeat this procedure until you have configured all new ports.
20 RS422/485 SERIAL INTERF ACE PLUS Computer does not recognize any COM ports, or the system is “dead” or non-responsive. How to identify the problem: Use the SSD.
21 When using Windows 3.1, only two ports at any time are functional. How to identify the problem: Verify that all ports have a separate interrupt, or if sharing interrupts, only one device is using the IRQ at a time.
22 RS422/485 SERIAL INTERF ACE PLUS The RS422/485 Serial Interface Plus is setup to use the A T interrupts, but there’ s no interrupt response. How to identify the problem: Verify that the interrupt jumpers are correctly set. Verify that the card is inserted into a 16-bit or AT slot.
23 7.1 Calling Black Box If you determine that your RS422/485 Serial Interface Plus is malfunctioning, do not attempt to alter or repair the unit. It contains no user-serviceable parts. Contact Black Box Technical Support at 724-746-5500. Before you do, make a record of the history of the problem.
24 RS422/485 SERIAL INTERF ACE PLUS SW2 C3 U4 74193 C2 Y1 U3 74193 U2 C1 SLS08-22V10 U1 74LS74 U6 C5 SW1 A T PPL L R1 BCD RP1 1 AUTO RTS 422 E3 RX R2 75173 U8 C7 R4 R3 R18 R6 R5 14 1 NS M E2 D1 C9 U5 .
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 2000. Black Box Corporation. All rights reserved..
An important point after buying a device Black Box IC171C (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 IC171C 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 IC171C - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Black Box IC171C you will learn all the available features of the product, as well as information on its operation. The information that you get Black Box IC171C will certainly help you make a decision on the purchase.
If you already are a holder of Black Box IC171C, 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 IC171C.
However, one of the most important roles played by the user manual is to help in solving problems with Black Box IC171C. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Black Box IC171C 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
