Manuale d’uso / di manutenzione del prodotto IC108C del fabbricante Black Box
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CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500 ) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation , 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.
1 FCC AND IC RFI ST A TEMENTS FEDERAL COMMUNICA TIONS COMMISSION AND INDUSTR Y CANADA RADIO FREQUENCY INTERFERENCE ST A TEMENTS This equipment generates, uses, and can radiate radio-frequency energy, .
2 RS-232 ↔ 485/422 CONVER TERS 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.
3 NOM ST A TEMENT 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal maner.
4 RS-232 ↔ 485/422 CONVER TERS TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.
5 CONTENTS Contents Chapter Page 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 RS-232 ↔ 485/422 CONVER TERS 1. Specifications Optical Isolation: IC109A, IC109AE, IC109C only Interface: (1) asynchronous RS-232 port (DTE/DCE selectable); (1) asynchronous RS-485 port with impro.
7 CHAPTER 1: Specifications Typical Speed Versus Distance (4-wire point-to-point 26-AWG twisted pair): Speed Distance 1200 bps 4 miles (6.4 km) 2400 bps 3 miles (4.8 km) 4800 bps 2.3 miles (3.7 km) 9600 bps 1.7 miles (2.7 km) 19,200 bps 1.2 miles (1.9 km) 38,400 bps 0.
8 RS-232 ↔ 485/422 CONVER TERS 2. Introduction The RS-232 ↔ 485/422 Converter Plus is an RS-232-to-RS-485 interface converter that operates in the same manner as a line driver. It allows an RS-232 device to transmit data over much longer distances than is normally possible (up to 4 miles—6.
9 CHAPTER 3: Installation 3. Installation This section describes the jumper and switch functions for configuring the RS-232 ↔ 485/422 Converter. See Figure 1 on the next page for the component locations. To install your RS-232 ↔ 485/422 Converter: 1.
10 RS-232 ↔ 485/422 CONVER TERS NOTE When the jumper W9 (CTS) is in the ON position and jumper W15 is in the A-B position, the RS-485 driver is always turned on to enable transmission of data. Therefore, half-duplex transmission cannot be performed.
11 CHAPTER 3: Installation 3.1.4 CTS D ELAY (W9 J UMPER ) When the transmitter of a device is first turned on, an unstable carrier signal is transmitted for several milliseconds. If data was sent during this period, it would be received as distorted information.
12 RS-232 ↔ 485/422 CONVER TERS Driver Enabled by Data The RS-485 driver can also be enabled without requiring an RS-232 control lead to be asserted. When jumper W15 is placed in the B-C position, the driver is enabled when data is received on the RS-232 port of the RS-232 ↔ 485/422 Converter.
13 CHAPTER 3: Installation Point-to-Point When only two devices are connected to the line in a point-to-point application, each device should have the termination network connected to the line.
14 RS-232 ↔ 485/422 CONVER TERS 3.2 DCE/DTE Configuration This section contains block diagrams (Figures 2 and 4) and jumper and switch settings (Tables 1 and 2) for DCE/DTE operation. For a detailed description of the jumpers and switches, see Section 3.
15 CHAPTER 3: Installation T able 1. DCE Jumper Settings. NOTE For additional information on the jumper requirements, see Section 3.1. Function Jumper Requirements 1.
16 RS-232 ↔ 485/422 CONVER TERS T able 1 (continued). DCE Jumper Settings. Function Jumper Requirements 5. Enable RS-485 driver a. RS-485 driver enabled by RS-232 control leads • by RTS W15 in A-B position and W9 in 0-ms position W9 in 10-ms position W9 in 30-ms position b.
17 CHAPTER 3: Installation T able 1 (continued). DCE Jumper Settings. Function Jumper Requirements 7. RS-485 interface terminated or unterminated • Terminated S2 in TERM position • Unterminated S2 in UNTERM position 8. Normal or loopback operation • Normal mode S1 in Normal position • Loopback mode S1 in Loopback position 9.
18 RS-232 ↔ 485/422 CONVER TERS Figure 3. Line Bias. S2 shows the line ter mination when “T er m” is selected. S3 shows line bias when “Bias” is selected.
19 CHAPTER 3: Installation Figure 4. Simplified Functional Block Diagram (DTE Operation). NOTE The delay settings for W9 apply only to the CTS output of the RS-232 ↔ 485/422 Converter.
20 RS-232 ↔ 485/422 CONVER TERS T able 2. DTE Jumper Settings. NOTE For additional information on the jumper requirements, see Section 3.1. Function Jumper Requirements 1.
21 CHAPTER 3: Installation T able 2 (continued). DTE Jumper Settings. Function Jumper Requirements b. RS-485 driver enabled by data W15 in B-C position and • Disable timeout delay W17 msec A7 0 B7 C2 D 0.7 E0 . 1 5 c. RS-485 driver constantly enabled W9 in ON position 6.
22 RS-232 ↔ 485/422 CONVER TERS T able 2 (continued). DTE Jumper Settings. Function Jumper Requirements 9. RS-485 Interface Line Biased (Fail- S3 Off No line bias Safe), Receive S3 On Line biased NOTE If line bias is on, the RS-485 CD will ALWAYS be on.
23 CHAPTER 3: Installation Figure 5. Point-T o-Point, 4-Wire (Full- or Half-Duplex). Figure 6. Point-to-Point, 2-Wire (Half-Duplex)..
24 RS-232 ↔ 485/422 CONVER TERS Figure 7 shows a typical multipoint, 4-wire, full- or half-duplex connection. Figure 8 shows a typical multipoint, 2-wire, half-duplex connection.
25 CHAPTER 3: Installation Figure 8. Multipoint, 2-Wire (Half-Duplex). Sample 4-Wire Multipoint Configuration In the following application, an industrial controller is used to gather information from several remote programmable logic controller (PLC) stations (see Figure 9).
26 RS-232 ↔ 485/422 CONVER TERS Figure 9. Sample Multipoint Operation. Installation Procedure for the Multipoint Application in Figure 9 1. Set all the RS-232 ↔ 485/422 Converters for DCE operation (jumper XW1 in position A).
27 CHAPTER 3: Installation 7. Since all the remote PLC stations must be inactive until addressed, the RS-485 driver of each remote RS-232 ↔ 485/422 Converter must not be constantly enabled (W9 of each remote RS-232 ↔ 485/422 Converter must be set to a position other than ON).
28 RS-232 ↔ 485/422 CONVER TERS Appendix A. Pinning T able 3. RS-232 interface (* denotes pins that are used). Pin Circuit Description Signal T ype Direction when configured as DCE DTE 1* AA Protect.
29 APPENDIX A: Pinning T able 4. RS-485 pinning char t. Pin Name Description TXA and TXB Data received by the RS-232 ↔ 485/422 Converter at the TXA=TX- RS-232 port is transmitted out of the unit over twisted- TXB=TX+ pair wires via these two outputs.
30 RS-232 ↔ 485/422 CONVER TERS Quick Reference: User-Selectable Options Use this list as a quick-reference guide when you need to change the jumper settings. An asterisk (*) designates the factory-preset jumper settings. XW1A DCE* XW1B DTE W8 A-B* 4-wire B-C 2-wire W15 A-B* RTS/CD enabled B-C Data enabled (Maximum speed is 64K.
31 QUICK REFERENCE: USER-SELECT ABLE OPTIONS W16 Turnaround delay (When W8 is in the B-C [2 wire] position, this is the time after the driver is disabled and before the receiver is enabled.
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 2002. Black Box Corporation. All rights reserved..
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Black Box IC108C è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Black Box IC108C - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Black Box IC108C imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Black Box IC108C ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Black Box IC108C, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Black Box IC108C.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Black Box IC108C. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Black Box IC108C insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
