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SERIES IP480 INDUSTRIAL I/O PACK SIX 16-BIT COUNTER/TIMER MODULE ___________________________________________________________________________________________ Because this device does not normally implement debounce on any of the counter/timer inputs (Trigger, Input, and Clock) and these inputs have a wide bandwidth, it is very important that input signals are kept clean and noise free to prevent potential errors. Well defined TTL or CMOS signal levels are preferred. When driving inputs, use of 50Ω generator outputs or a 50Ω series-coupled resistor will improve results. If noisy field input signals and erratic operation continues to occur, some consideration should be given to external filtering or wave shaping of the input signals to prevent these types of errors. Refer to Table 3.1 and note that the base address for the IP module I/O space (see your carrier board instructions) must be added to the addresses shown to properly access the I/O space. Accesses are generally performed on a 16-bit basis (D0..D15), but 8-bit D08 (EO) accesses are possible in most cases. 3 Table 3.1: IP480 R/W Space Address (Hex) Memory Map ODD EVEN Base Base MSB LSB Addr+ D15 D08 D07 D00 Addr+ 00 Counter 1 Control Register (R/W) (Not Used For 32-bit Counter) 01 02 Counter 2 Control Register (R/W) (or 32-bit Counter 1 Control Register) 03 04 Counter 3 Control Register (R/W) (Not Used For 32-bit Counter) 05 06 Counter 4 Control Register (R/W) (or 32-bit Counter 2 Control Register) 07 08 Counter 5 Control Register (R/W) (Not Used For 32-bit Counter) 09 0A Counter 6 Control Register (R/W) (or 32-bit Counter 3 Control Register) 0B 0C Counter 1 Read Back Register (Read Only) (or 32-bit Counter 1 Value MSW) 0D 0E Counter 2 Read Back Register (Read Only) (or 32-bit Counter 1 Value LSW) 0F 10 Counter 3 Read Back Register (Read Only) (or 32-bit Counter 2 Value MSW) 11 12 Counter 4 Read Back Register (Read Only) (or 32-bit Counter 2 Value LSW) 13 14 Counter 5 Read Back Register (Read Only) (or 32-bit Counter 3 Value MSW) 15 16 Counter 6 Read Back Register (Read Only) (or 32-bit Counter 3 Value LSW) 17 4 18 Counter 1 Constant Register (Write Only) (or 32-bit Counter Constant 1 MSW) 19 4 1A Counter 2 Constant Register (Write Only) (or 32-bit Counter Constant 1 LSW) 1B 4 1C Counter 3 Constant Register (Write Only) (or 32-bit Counter Constant 2 MSW) 1D 4 1E Counter 4 Constant Register (Write Only) (or 32-bit Counter Constant 2 LSW) 1F 4 20 Counter 5 Constant Register (Write Only) (or 32-bit Counter Constant 3 MSW) 21 4 22 Counter 6 Constant Register (Write Only) (or 32-bit Counter Constant 3 LSW) 23 1 24 Not Used Trigger Control (Bits 15..06) Register, Bits 05..00 (Write) 25 1 26 Not Used Software Reset (Bits 15..01) Register, Bit 00 (Write Only) 27 28 (32-bit Counter 1 Not Used /Timers Only) Readback Latch (Bits 15..01) Control Register Bit 00 (Read/Write) 29 2A Interrupt Pending/ 1 Clear Register, Not Used Bits 13..08 (R/W) (Bits 07..00) 2B 1 2C Not Used Interrupt Vector (Bits 15..08) Bits 07..00 (R/W) 2D 2E 2F 2 ↓ ↓ NOT USED 7E 7F IP Logic Interface Connector (P1) P1 of the IP module provides the logic interface to the mating connector on the carrier board and its pin assignments are standard for all IP modules according to the Industrial I/O Pack Specification (see Table 2.2). This connector is a 50-pin female receptacle header (AMP 173279-3 or equivalent) which mates to the male connector of the carrier board (AMP 173280-3 or equivalent). This provides excellent connection integrity and utilizes gold-plating in the mating area. Threaded metric M2 screws and spacers are supplied with the IP module to provide additional stability (see Drawing 4501-434 for assembly details). Field and logic side connectors are keyed to avoid incorrect assembly. Table 2.2: Standard Logic Interface Connections (P1) Pin Description Number Pin Description Number GND 1 GND 26 CLK 2 +5V 27 Reset* 3 R/W* 28 D00 4 IDSEL* 29 D01 5 DMAReq0* 30 D02 6 MEMSEL* 31 D03 7 DMAReq1* 32 D04 8 IntSel* 33 D05 9 DMAck0* 34 D06 10 IOSEL* 35 D07 11 RESERVED 36 D08 12 A1 37 D09 13 DMAEnd* 38 D10 14 A2 39 D11 15 ERROR* 40 D12 16 A3 41 D13 17 INTReq0* 42 D14 18 A4 43 D15 19 INTReq1* 44 BS0* 20 A5 45 BS1* 21 STROBE* 46 -12V 22 A6 47 +12V 23 ACK* 48 +5V 24 RESERVED 49 GND 25 GND 50 An Asterisk (*) is used to indicate an active-low signal. BOLD ITALIC Logic Lines are NOT USED by this IP Model. 3.0 PROGRAMMING INFORMATION ADDRESS MAPS This board is addressable in the Industrial Pack I/O space to monitor and control the status and configuration of up to six 16-bit counter/timers, or three 32-bit counter/timers. The I/O space may be as large as 64, 16-bit words (128 bytes) using address lines A1..A6, but the IP480 uses only a portion of this space. -7-