Acromag Series IP503 User Manual
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Acromag Series IP503 User Manual

Industrial i/o pack eia/tia-232e & centronics communication module
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Series IP503 Industrial I/O Pack
EIA/TIA-232E & Centronics Communication Module
USER'S MANUAL
ACROMAG INCORPORATED
30765 South Wixom Road
P.O. BOX 437
Wixom, MI 48393-7037 U.S.A.
Tel: (248) 624-1541
Fax: (248) 624-9234
Copyright 1995, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice.
8500-539-B98G009

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  • Page 1 EIA/TIA-232E & Centronics Communication Module USER’S MANUAL ACROMAG INCORPORATED 30765 South Wixom Road P.O. BOX 437 Wixom, MI 48393-7037 U.S.A. Tel: (248) 624-1541 Fax: (248) 624-9234 Copyright 1995, Acromag, Inc., Printed in the USA. Data and specifications are subject to change without notice. 8500-539-B98G009...

  • Page 2: Table Of Contents

    The information contained in this manual is subject to change IMPORTANT SAFETY CONSIDERATIONS without notice. Acromag, Inc. makes no warranty of any kind with regard to this material, including, but not limited to, the implied It is very important for the user to consider the possible adverse warranties of merchantability and fitness for a particular purpose.

  • Page 3: Industrial I/O Pack Interface Features

    (see Acromag Model APC8600)A wide range “READMETXT” file in the root directory on the diskette and the of other Acromag IP modules are also available to serve your “INFO503TXT” file in the appropriate “IP503” subdirectory off of signal conditioning and interface needs “\VMEIP”...

  • Page 4: Card Cage Considerations

    A (pins 1-9), serial port B (pins 10- air, careful consideration should be given to air-filtering 18), & Centronics port (pins 26-50) connectivity (see Acromag cable Model 5029-944)In Table 21, a suffix of “_A”, or “_B” is BOARD CONFIGURATION appended to each pin label to denote its serial port association.

  • Page 5: Noise And Grounding Considerations

    SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ IP Logic Interface Connector (P1) P2 Pin Signal Descriptions continued SIGNAL DESCRIPTION P1 of the IP module provides the logic interface to the mating RTS_A* Request-to-Send Output - The RTS output is connector on the carrier board.
  • Page 6 SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ IP503 Data, Status, and Control Registers Table 31:IP503 R/W Space Address (Hex) Memory Map Base Base SERIAL DATA REGISTERS (Per Serial Port): Addr+ D15D08 D07 D00 Addr+ Receive Buffer Register...

  • Page 7: Ip Communication & Configuration Registers

    SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ Two FIFO modes are possible: FIFO Interrupt Mode and FIFO Serial Port B Registers continued: Polled Mode. Some registers operate differently between the Base Base available modes and this is noted in the following paragraphs...
  • Page 8 SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ Upon loading either latch, a 16-bit baud counter is To better understand the asynchronous timing used by this immediately loaded (this prevents long counts on initial load)The device, note that the receive data line (RxD) is monitored for a...
  • Page 9 SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ FIFO Control Register continued The four lower order bits of this register are used to identify the interrupt pending as follows: FCR BIT FUNCTION When set to “1”, this bit clears all bytes in the Rx-...
  • Page 10 SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ Notes (Modem Control Register): Line Control Register continued 1 MCR Bit 4 provides a local loopback feature for diagnostic LCR Bit FUNCTION PROGRAMMING testing of the UART channel. When set high, the UART...
  • Page 11 SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ Line Status Register continued Line Status Register continued LSR Bit FUNCTION PROGRAMMING LSR Bit FUNCTION PROGRAMMING Parity Error 0 = No Error Transmitter 0 = Not Empty (PE) 1 = Parity Error - the received...
  • Page 12 SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ If the extended mode bit is 1, then read operations return MSR - Modem Status Register continued either the last data written to the port (if the direction bit of the...

  • Page 13: Ip Identification Prom

    SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ LPC - Line-Printer Control Register Setting bit 0 of this register low enables the AT Mode of LPC Bit FUNCTION/PORT SIGNAL interrupts. In the AT mode, INTREQ0* will bedriven by the STB - Printer-Strobe Control Bit ACKN* input line of the parallel port.

  • Page 14: The Effect Of Reset

    Line Status Register must be read to determine the channel (THRE) THR/Reset status Interrupt Read MSR/ (Modem Status Reset Acromag provides an Industrial I/O Pack Software Library Changes) diskette (Model IPSW-LIB-M03, MSDOS format) to simplify RTS* Reset High communication with the board. Example software functions are DTR*...

  • Page 15: Interrupt Generation

    SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ FIFO Polled-Mode 2 The transmit FIFO empty indications are delayed one character time minus the last stop bit time when the following occurs: Resetting Interrupt Enable Register Bit 0, Bit 1, Bit 2, Bit 3, or...

  • Page 16: Programming Example

    SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ Interrupt priority is assigned as follows. Initially, with no prior 3 Write 0BH to the Line Control Register (LCR) interrupt history, serial port A has the highest priority and will be served first, followed by serial port B, then the parallel port.

  • Page 17: Theory Of Operation

    SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ This loads the transmit FIFO and initiates transmission of EIA/TIA-232E SERIAL INTERFACE serial data on the TxD line. The first serial byte will take about 100us to transmit, so it is likely that the transmit FIFO...

  • Page 18: The Centronics Parallel Interface

    SERIES IP503 INDUSTRIAL I/O PACK EIA/TIA-232E & CENTRONICS COMMUNICATION MODULE ___________________________________________________________________________________________ The most common asynchronous serial data format is 1 start Each of these signals are described in detail below assuming that bit,8 data bits, and 1 stop bit, with no parity. The following table...

  • Page 19: Ip503 Operation

    25-pin “D” shell connector includes some lines that may or may not be supported by various used for parallel ports and not the P2 pin number (see Acromag peripheral devices. However, the basic interface will include the...

  • Page 20: Logic/Power Interface

    It is highly recommended that a non-functioning motors board be returned to Acromag for repair. The board can be easily ESD Protection ......EIA/TIA-232E lines are damaged unless special SMT repair and service tools are used.

  • Page 21: Eia/Tia-232E Serial Ports

    Output Short Circuit Current± ..12mA Max, ±6mA Min Output Cable:50-wire flat ribbon cable, 28 gage. Non-Shielded cable Resistance300Ω Minimum model uses Acromag Part 2002-211 (3M Type C3365/50 or Propagation Delay (High-to-Low)... 2us Max (R = 3KΩ, C equivalent)Shielded cable model uses Acromag Part 2002-...

  • Page 22: Cable: Model 5025-944

    Connects to Schematic and Physical Attributes: See Drawing 4501-464 Acromag termination panel 5025-552 from the rear of the Field Wiring:50-position terminal blocks with screw clamps. Wire card cage, and to AVME9630/9660 boards within card cage,...

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