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Connect Tech DFlex-4/104 User Manual

Multi-port serial communications adapter
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Connect Tech Inc.
"Meeting your objectives ... by design"
DFlex-4/104
Multi-port Serial Communications
Adapter

User Manual

Connect Tech Inc
42 Arrow Road
Guelph, Ontario
N1K 1S6
Tel: (519) 836-1291
1-800-426-8979
Fax: (519) 836-4878
Email: sales@connecttech.com
FTP: ftp.connecttech.com
URL: http://www.connecttech.com
CTIM-00144, Revision 0.04 February 26 2001
Part Number: MAN045
DFlex-4/104 User's Manual, ver. 0.04

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Summary of Contents for Connect Tech DFlex-4/104

  • Page 1: User Manual

    Adapter User Manual Connect Tech Inc 42 Arrow Road Guelph, Ontario N1K 1S6 Tel: (519) 836-1291 1-800-426-8979 Fax: (519) 836-4878 Email: sales@connecttech.com FTP: ftp.connecttech.com URL: http://www.connecttech.com CTIM-00144, Revision 0.04 February 26 2001 Part Number: MAN045 DFlex-4/104 User's Manual, ver. 0.04...
  • Page 2 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 3: Limited Warranty

    LIMITED WARRANTY Connect Tech Inc. warrants to the original purchaser of this Connect Tech hardware product that it is to be in good working order for a period of one year from the date of purchase from Connect Tech Inc. or an authorized Connect Tech dealer. Should this product, in Connect Tech Inc.'s opinion, fail to be in good...

  • Page 4: Trademark Acknowledgment

    Copyright/Trademarks Copyright Notice The information contained in this document is subject to change without notice. Connect Tech shall not be liable for errors contained herein or for incidental consequential damages in connection with the furnishing, performance, or use of this material.
  • Page 5 Certification Certification DFlex-4/104 The DFlex-4/104 is to be included into a device ultimately subject to FCC, DOC/IC, and CE certification. The customer is responsible for bringing the completed device into compliance prior to resale. DFlex-4/104 User's Manual, ver. 0.04...
  • Page 6 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 7: Table Of Contents

    Mode 3 (four IRQs) ...2-11 Baud Rate Selection ...2-12 Serial Line Interface Modules (SLIM)...2-15 SLIM Installation...2-15 SLIM compatibility ...2-18 Installing the DFlex-4/104 Adapter in your System ...2-18 Chapter 3: Software Installation Introduction ...3-1 Configuration ...3-1 DOS 3.XX - 6.XX ...3-1 Linux...3-2...
  • Page 8 RS-485/422 SLIM ...4-18 RS-485/422 Cable Wiring ...4-21 Appendix G: RS-423 Options ...4-23 Installation ...4-24 RS-423 Cable Wiring ...4-26 Appendix H: 20mA Current Loop Option ...4-27 Installation ...4-27 20mA Current Loop SLIM...4-28 Current Loop Cable Wiring...4-31 DFlex-4/104 User's Manual, ver. 0.04...
  • Page 9 Table 10: SLIM pinouts ...4-25 Table 11: SLIM pinouts ...4-30 List of Figures Figure 1: DFlex-4/104 adapter...1-4 Figure 2: DFlex-4/104 - 16 port configuration ...1-5 Figure 3: Problem summary sheet ...1-7 Figure 4: Port address (SW1)...2-4 Figure 5: IRQ jumper & switch blocks...2-6 Figure 6: Baud rate jumper block (J1) ...2-13...

  • Page 10: Dflex-4/104 User's Manual, Ver

    DFlex-4/104 User's Manual, ver. 0.04...

  • Page 11: Chapter 1: Introduction

    Chapter 1: Introduction Introduction ...1-1 Manual Overview...1-1 Conventions & Symbols...1-2 Product Overview ...1-3 DFlex-4/104 Adapter...1-3 DFlex-4/104 Software ...1-6 Customer Service Overview ...1-6 RMA Overview...1-9 DFlex-4/104 User's Manual, ver. 0.04...
  • Page 12 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 13: Introduction

    RMA Overview - describes the RMA policy and procedures for all Connect Tech products. Manual Overview The purpose of the DFlex-4/104 User's Manual is to help you install the DFlex-4/104 as effortlessly as possible. The manual includes four main sections: Introduction - the section you are currently reading, covers the DFlex-4/104 features;...

  • Page 14: Conventions & Symbols

    The "Warning" convention advises you to take certain precautions in order to avoid possible damage to your Connect Tech product. This message warns you that your Connect Tech product is very sensitive to static electricity. Make sure that before handling the product you practice proper ESD procedures.

  • Page 15: Product Overview

    DFlex-4/104 adapter DFlex-4/104 DOS device drivers DFlex-4/104 Windows 95/98 device drivers Note: You can also order standard cables for the DFlex-4/104 DFlex-4/104 Adapter DFlex-4/104 adapters provide the high speed interfaces between a host computer and multiple external serial devices. DFlex-4/104 adapters include features such as: 4 asynchronous serial ports.

  • Page 16: Figure 1: Dflex-4/104 Adapter

    UART Maximum baud rate jumper block (J1) The DFlex-4/104 adapters can accommodate both small and large multi-channel applications. You can combine DFlex-4/104 adapters in a single system. Figure 2 below represents a sample configuration for a system requiring 16 ports.

  • Page 17: Figure 2: Dflex-4/104 - 16 Port Configuration

    Chapter 1: Introduction Figure 2: DFlex-4/104 - 16 port configuration 9 / 2 9 / 2 9 / 2 9 / 2 Host System Terminals DFlex-4/104 Terminals DFlex-4/104 Terminals DFlex-4/104 Terminals DFlex-4/104 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 18: Dflex-4/104 Software

    Chapter 3: Software Installation. Customer Service Overview If you experience difficulties after reading the manual and using the product, contact the Connect Tech reseller from which you purchased the product. In most cases the reseller can help you with product installation and difficulties.

  • Page 19: Figure 3: Problem Summary Sheet

    Hard disk adapter: Tape adapter: Other serial adapters Other adapters: Devices connected to ports: Revision no.: No. of serial ports: Base address selected: Revision no.: Revision no.: CPU type/speed: Settings: Settings: Settings: Settings: Settings: Settings: DFlex-4/104 User's Manual, ver. 0.04...
  • Page 20 Customer Support representatives are ready to answer your call Monday through Friday, from 9:00 a.m. to noon and 1:00 p.m. to 5:00 p.m. Eastern Standard Time. Our numbers for calls are: Telephone: Toll Free: Facsimile DFlex-4/104 User's Manual, ver. 0.04 519-836-1291 1-800-426-8979 519-836-4878 (on-line 24 hours)

  • Page 21: Rma Overview

    Note: Please pack the item for repair securely and ship it prepaid and insured. Connect Tech is not liable for damage or loss to the product due to shipping. Connect Tech will not accept items for repair without an RMA number.
  • Page 22 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 23: Chapter 2: Hardware Installation

    Mode 1 (one IRQ)...2-7 Mode 2 (two IRQs)...2-9 Mode 3 (four IRQs) ...2-11 Baud Rate Selection ...2-12 Serial Line Interface Modules (SLIM)...2-15 SLIM Installation...2-15 SLIM compatibility ...2-18 Installing the DFlex-4/104 Adapter in your System ...2-18 DFlex-4/104 User's Manual, ver. 0.04...
  • Page 24 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 25: Introduction

    Configuration You must configure various settings and options before installing your DFlex-4/104 adapter in your system. In order to insure a successful installation, please follow the steps in the order specified below. Selection of I/O and status port addresses.

  • Page 26: Port Addresses

    Port Addresses Port addresses are configured with the DIP switch block SW1 situated near the PC/104 bus connector on the DFlex-4/104 adapter. DIP switches 1, 2, and 3 select a set of port addresses for the ports while DIP switch 6 enables or disables a specific status port address for that set of addresses.

  • Page 27: Status Port Addresses

    Status Port, for example Windows NT offers it as an option and for SCO Unix it is mandatory. This can improve your system’s efficiency. The DFlex-4/104 offers a status port and this port is enabled and disabled using DIP switch 6 on switch block SW1.

  • Page 28: Custom Port Addresses

    Custom Port Addresses You can generate other port addresses by making changes to the PALs found on the DFlex-4/104 adapter. If you require specific port addresses not listed in Table 2 please contact the Connect Tech sales department for further information.

  • Page 29: Table 2: Port Address Settings

    240, 248, 250, 258 (hex) and status port 260 (hex) enabled. Port address switches Ports Status Port switch Port address switch block Status Port switch Port address switch block Status Port switch Port address switch block DFlex-4/104 User's Manual, ver. 0.04 Status...

  • Page 30: Interrupt Selection

    You can configure an interrupt request line (IRQ) with the jumper block J2 and DIP switches 4 and 5 on switch block SW1 situated near the PC/104 bus connector on the DFlex-4/104 adapter. Please refer to Figure 5 for a description and location of the jumper block J2 and switch block SW1.

  • Page 31: Mode 1 (One Irq)

    Chapter 2: Hardware Installation You are able to configure the DFlex-4/104 adapter for three different IRQ modes. Mode 1 (one IRQ): all ports interrupting on one IRQ Mode 2 (two IRQs): odd ports (ports 1 and 3) interrupt on one IRQ and even ports (ports 2 and 4) interrupt on another Mode 3 (four IRQs): each port interrupts on it’s own...
  • Page 32 The following example shows the settings on J2 and SW1 so that all ports will interrupt on IRQ 10. Note: Ensure that all other unused jumpers on J2 are removed or not contacting more than one pin. DFlex-4/104 User's Manual, ver. 0.04 IRQ switches Port address switch block...

  • Page 33: Mode 2 (Two Irqs)

    B/D row and the middle row of jumper block J2 for ports 2 and 4. Ensure that all other unused jumpers on J2 are removed or not contacting more than one pin. position. DFlex-4/104 User's Manual, ver. 0.04...
  • Page 34 1 and 3 will interrupt on IRQ 10 and ports 2 and 4 will interrupt on IRQ 15. Note: Ensure that all other unused jumpers on J2 are removed or not contacting more than one pin. DFlex-4/104 User's Manual, ver. 0.04 IRQ switches Port address switch block...

  • Page 35: Mode 3 (Four Irqs)

    In Mode 3, ports 1 and 2 are limited to IRQs 3 to 9/2 and ports 3 and 4 are limited to IRQs 10 to 15 position. portions portion of J2 portion of J2 portion of J2 portion of DFlex-4/104 User's Manual, ver. 0.04 2-11...

  • Page 36: Baud Rate Selection

    Note: Ensure that all other unused jumpers on J2 are removed or not contacting more than one pin. Baud Rate Selection The DFlex-4/104 is a high-speed serial adapter for PC/104 bus compatible computers. Utilizing large FIFO buffers in the 16C654 quad UART and high-speed circuitry, the DFlex-4/104 adapter is an ideal solution for applications requiring serial communications up to 460K baud.

  • Page 37: Figure 6: Baud Rate Jumper Block (J1)

    460.8 kbps. Please refer to Figure 6 for a description and location of the jumper block J1. Figure 6: Baud rate jumper block (J1) Baud rate jumper block (J1) DFlex-4/104 User's Manual, ver. 0.04...

  • Page 38: Table 3: Baud Rates

    Some device drivers actually autodetect or allow the user to specify the oscillator frequency in order to select the desired baud rate correctly: The Connect Tech Windows95 driver selection for DFlex/Fast or DFlex-4/104.( The OS2 driver from Ray Gwinn ( oscillator. ( The QNX4 driver to use.

  • Page 39: Serial Line Interface Modules (Slim)

    Appendix H: 20mA Current Loop Option for more technical information. SLIM Installation The DFlex-4/104 adapter has two sockets that accept Serial Line Interface Modules (SLIM). Each SLIM provides the RS-232 or RS-485/422 or RS-423 or 20mA current loop receivers and transmitters to condition two serial ports.

  • Page 40: Figure 7: Slim Socket To Serial Port Relationship

    If you experience resistance, check the alignment and insertion depth of the SLIM. Refer to Appendix D: SLIM Insertion/Removal regarding the insertion of a SLIM. DFlex-4/104 User's Manual, ver. 0.04 Port 4 Port 3 Port 1 connector...
  • Page 41 SLIM from the clips. Your index fingers can then raise the SLIM past the clips. You can then remove the SLIM from the DFlex-4/104 adapter. The force required to open the clips is small and the SLIM naturally springs upwards when the clips are open wide enough.

  • Page 42: Slim Compatibility

    SLIM compatibility Some of the standard SLIM modules cannot take advantage of the faster baud rates available with a DFlex-4/104 is set for 460.8 Kbps. The following SLIM modules are compatible with a DFlex-4/104 adapter set for 460k mode on J1:...

  • Page 43: Introduction

    Configuration ...3-1 DOS 3.XX - 6.XX ...3-1 Linux...3-2 Multiuser DOS 7 GOLD ...3-2 OS/2...3-2 QNX 2.XX...3-2 QNX 4.XX...3-3 SCO Unix ...3-3 Windows 3.XX ...3-3 Windows 95/98...3-3 Windows NT ...3-4 Utilities...3-4 Portfind ...3-4 Porttest...3-4 SeePORT ...3-4 DFlex-4/104 User's Manual, ver. 0.04...
  • Page 44 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 45: Introduction

    Chapter 3: Software Installation Introduction The DFlex-4/104 is a standard multi-port serial adapter in a PC/104 format that utilizes 16C654 quad UARTS. In many cases, users have software that will interface directly to the DFlex-4/104. Many operating systems are equipped with device drivers to control access to multiple 16550 style UARTS.

  • Page 46: Linux

    IRQ. Please refer to the distribution diskette for more information about installing the DFlex-4/104 for the Multiuser DOS 7 GOLD operating system. OS/2 OS/2 is a leading multi-tasking operating system for Intel based personal computers.

  • Page 47: Qnx 4.Xx

    IRQ. Please refer to the diskette for more information about installing the DFlex-4/104 for the QNX 4.XX operating system. SCO Unix SCO Unix is a leading multi-user, multi-tasking, operating system for Intel based personal computers.

  • Page 48: Windows Nt

    Windows NT and its standard serial driver allow users to configure their computer systems with multiple serial ports sharing one IRQ. Please refer to the diskette for more information about installing the DFlex-4/104 for the Windows NT operating system. Utilities Portfind Portfind is a utility that verifies the I/O port addresses and IRQs of the serial ports in your system.
  • Page 49 RS-485/422 SLIM ...4-18 RS-485/422 Cable Wiring ...4-21 Appendix G: RS-423 Options ...4-23 Installation ...4-24 RS-423 Cable Wiring ...4-26 Appendix H: 20mA Current Loop Option ...4-27 Installation ...4-27 20mA Current Loop SLIM...4-28 Current Loop Cable Wiring...4-31 DFlex-4/104 User's Manual, ver. 0.04...
  • Page 50 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 51: Appendix A: Specifications

    Operating Environment Storage temperature: Operating temperature: Power Requirements DFlex-4/104 (no Serial Line Interface Module) +5 VDC +/-5% @ 100 mA (max.) +5 VDC +/-5% @ 400 mA (max.) if using the +5V connections on the COM port headers RS-232 SLIM (no load)

  • Page 52: Control Signals

    SIMM-20MA CAB104 Certification DFlex-4/104 The DFlex-4/104 is to be included into a device ultimately subject to FCC, DOC/IC, and CE certification. The customer is responsible for bringing the completed device into compliance prior to resale. DFlex-4/104 User's Manual, ver. 0.04 RTS;...

  • Page 53: Appendix B: Connectors/Pinouts

    DFlex-4/104 port connector pinouts DFlex-4/104 cable connector pinouts DFlex-4/104 power connector pinouts SLIM pinouts Port Connector Pinouts Tables 4 shows the pinouts for the DFlex-4/104 10 pin port header connectors Table 4: 10 pin port header pinouts RS-232 Pin No.

  • Page 54: Table 5: Db-9 Cable Connector Pinouts

    The common way to do this is to connect DCD to DTR and/or to connect CTS to RTS. Failure to do so may result in a loss of a performance on your DFlex-4/104 adapter. DFlex-4/104 User's Manual, ver. 0.04...

  • Page 55: Table 6: Power Connector Pinouts

    Chapter 4: Appendix B - Connectors/Pinouts Power Connector Pinouts Table 6 shows the pinouts for the DFlex-4/104 8 pin power header connector Table 6: Power connector pinouts Description +12V -12V Printed circuit board DFlex-4/104 User's Manual, ver. 0.04...

  • Page 56: Slim Pinouts

    Chapter 4: Appendix B - Connectors/Pinouts SLIM Pinouts Table 7 shows the pinouts for the Connect Tech Serial Line Interfaces Modules. Table 7: SLIM pinouts SLIM RS-232 Pin No. Signal Signal RTS 1 TxD 1 CTS 1 RxD 1 DTR 1...

  • Page 57: Appendix C: Factory Settings

    I/O/Status Port Address Setting Switch block S1 sets the I/O and status port addresses for the DFlex-4/104 adapter. Connect Tech ships the DFlex-4/104 adapter with S1 set for I/O port addresses 200, 208, 210, 218 hex and the status port disabled. Figure 8 shows the location and factory setting of this jumper block.

  • Page 58: Irq Setting

    IRQ Setting Jumper block J2 along with DIP switches 4 and 5 on switch block SW1 sets the IRQ line for the DFlex-4/104 adapter. Connect Tech ships the DFlex-4/104 with a shorting block installed across pins to set all ports to interrrupt on IRQ 4. Figure 9 shows the location and factory setting of jumper block J2 and switch block SW1.

  • Page 59: Baud Rate Setting

    Chapter C: Appendix F - Factory Settings Baud Rate Setting Jumper block J1 sets the maximum baud rate for the DFlex-4/104 adapter. Connect Tech ships the DFlex-4/104 set for a maximum baud rate of 115K baud. Figure 10 shows the location and factory setting of jumper block J1.
  • Page 60 DFlex-4/104 User's Manual, ver. 0.04...

  • Page 61: Appendix D: Slim Insertion/Removal

    Do NOT force the SLIM, the installation process requires a small force and should be very smooth and easy. If you encounter resistance then re-check the orientation and insertion depth. Hole DFlex-4/104 User's Manual, ver. 0.04 4-11...

  • Page 62: Slim Removal

    SLIM is released from the clips. Your index fingers can then raise the SLIM past the clips. The SLIM is then free to be removed from the DFlex-4/104 board. The force required to open the clips is small and the SLIM naturally springs upwards as soon as the clips are open wide enough.

  • Page 63: Chapter 4: Appendix E - Rs-232 Options

    Chapter 4: Appendix E - RS-232 Options Appendix E: RS-232 SLIM Option You may order the DFlex-4/104 adapter with RS-232 and RS- 232/Fast Serial Line Interfaces Modules. The RS-232 and RS- 232/Fast SLIMs offer the following features: The RS-232 electrical interface, an industry standard that offers connection to a wide range of peripheral devices.

  • Page 64: Figure 13: Rs-232; Rs-232/Fast Slim: Partial Schematic

    Figure 13: RS-232; RS-232/Fast SLIM: partial schematic Connector Note: The RS-232 and RS-232/Fast Serial Line Interface Module controls two ports, and therefore the schematic shows only a portion of the circuit. DFlex-4/104 User’s Manual, ver. 0.04 RS-232 & RS-232/Fast SLIM Partial Schematic UART...

  • Page 65: Installation

    The standard RS-232 SLIM is not fully functional with a DFlex- 4/104 adapter with J1 set for a maximum baud rate of 460K baud. Only the RS-232/Fast Serial Line Interface Module (SLIM) is fully functional with the DFlex-4/104 set for a maximum baud rate of 460k baud. Installation The DFlex-4/104 adapter has two SLIM sockets that accept Serial Line Interface Modules.

  • Page 66: Table 8: Slim Pinouts

    DTR 1 RTS 1 CTS 1 DCD 1 Note: earlier versions of the current loop SLIM have pins 22, 23, 32, and 33 tied low. DFlex-4/104 User’s Manual, ver. 0.04 RS-485 RS-423 Signal Signal RTS A(-) 1 RTS (-) 1...

  • Page 67: Appendix F: Rs-485/422 Options

    DFlex-4/104 adapter. Installation The DFlex-4/104 adapter has two SLIM sockets that accept Serial Line Interface Modules. SLIM 1 socket interfaces ports 1 and 2. SLIM 2 socket interfaces ports 3 and 4. Please refer to Chapter...

  • Page 68: Chapter 4: Appendix F - Rs-485/422 Option

    RS-485 line drivers are disabled to allow other devices access to the line. Your DFlex-4/104 adapter does not provide DIP switches to control the driver enables for the RS-485 SLIM. Instead, the DTR signal is used to gate the control. If DTR is asserted, the drivers are always enabled.

  • Page 69: Figure 14: Rs-485/422 Slim Partial Schematic

    Net # Pin # Net 1 7, 8 Net 2 5, 6 Net 3 3, 4 Net 4 1, 2 DFlex-4/104 User's Manual, ver. 0.04 4-19 Port 2 TxD A SLIM Pin 11 TxD B SLIM Pin 13 RTS A...

  • Page 70: Table 9: Slim Pinouts

    DTR 1 RTS 1 CTS 1 DCD 1 Note: earlier versions of the current loop SLIM have pins 22, 23, 32, and 33 tied low. DFlex-4/104 User’s Manual, ver. 0.04 RS-485 RS-423 Signal Signal RTS A(-) 1 RTS (-) 1...

  • Page 71: Rs-485/422 Cable Wiring

    This section will descibe a few examples of RS-485/422 cabling schemes. Figure 15 describes a 4 wire cabling scheme between a port on the DFlex-4/104 adapter to a port on the RS-485/422 peripheral. Figure 15: RS-485/422 wiring diagram (4 wire) DFlex-4/104 adapter Figure 16 describes a 2 wire cabling scheme between a port on the DFlex-4/104 adapter to a port on the RS-485/422 peripheral.
  • Page 72 DFlex-4/104 User’s Manual, ver. 0.04...

  • Page 73: Appendix G: Rs-423 Options

    Chapter 4: Appendix G - RS-423 Options Appendix G: RS-423 Options You may order the DFlex-4/104 adapter with RS-423 Serial Line Interfaces Module. The RS-423 electrical interface is a reliable high-speed serial link that offers superior noise immunity. You must insert Serial Line Interface Modules into all of the SLIM sockets to attain the communications functionality of your DFlex-4/104 adapter.

  • Page 74: Chapter 4: Appendix G - Rs-423 Option

    Chapter 4: Appendix G - RS-423 Option Installation The DFlex-4/104 adapter has two SLIM sockets that accept Serial Line Interface Modules. SLIM 1 socket interfaces ports 1 and 2. SLIM 2 socket interfaces ports 3 and 4. Please refer to Chapter...

  • Page 75: Table 10: Slim Pinouts

    CTS B(+) 2 CTS B(+) 2 RxD B(+) 2 RxD B(+) 2 Tied high Tied high Tied high Tied high DFlex-4/104 User's Manual, ver. 0.04 4-25 Current Loop Signal TxD(-) 1 TxD Source 1 RxD(+) 1 TxD(+) 1 RxD Return 1...

  • Page 76: Rs-423 Cable Wiring

    4-26 Chapter 4: Appendix G - RS-423 Option RS-423 Cable Wiring You can wire DFlex-4/104 adapter with the RS-423 option in various ways to communicate with RS-423 peripherals. This section will descibe a few examples of RS-423 cabling schemes. Figure 18 describes a 4 wire cabling scheme between a port on the DFlex-4/104 adapter to a port on the RS-423 peripheral.

  • Page 77: Chapter 4: Appendix H - 20Ma Current Loop

    DFlex-4/104 adapter. Installation The DFlex-4/104 adapter has two SLIM sockets that accept Serial Line Interface Modules. SLIM 1 socket interfaces ports 1 and 2. SLIM 2 socket interfaces ports 3 and 4. Please refer to Chapter...

  • Page 78: 20Ma Current Loop Slim

    TxD 6 4100 4 TxD - +12V VF = 1.5V 33 Ohm -12V Where: SLIM Pin No. DFlex-4/104 User’s Manual, ver. 0.04 20mA Current Loop SLIM Partial Schematic HCPL RxD 7 4200 +12V 51 Ohm 2N2907A RxD SRC RxD RET...
  • Page 79 Please refer to Figure 21 for a 20mA current loop cable wiring configuration between one port of a DFlex-4/104 adapter and another port of a DFlex-4/104 adapter. This example shows wiring for both active and passive modes.

  • Page 80: Table 11: Slim Pinouts

    DTR 1 RTS 1 CTS 1 DCD 1 Note: earlier versions of the current loop SLIM have pins 22, 23, 32, and 33 tied low. DFlex-4/104 User’s Manual, ver. 0.04 RS-485 RS-423 Signal Signal RTS A(-) 1 RTS (-) 1...

  • Page 81: Current Loop Cable Wiring

    Chapter 4: Appendix H - 20mA Current Loop Current Loop Cable Wiring You can wire DFlex-4/104 adapters with the 20mA Current Loop option in various ways to communicate with 20mA Current Loop peripherals. This section will descibe a few examples of current loop cabling schemes.
  • Page 82 DFlex-4/104 User’s Manual, ver. 0.04...

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