ADLINK Technology GEME-4000 Series, User Manual

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Extension Modules
5.8 PMC-7852G
„ 5.8.1 Features
General:
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One master has two HSL ports
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One port can drive maximum 32 modules
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One master can control maximum 63 slave I/O modules
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Maximum wiring distance for each port: 200m (serial wiring from master to
last slave module)
Wiring:
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Connector: RJ45 (on both master controller and slave modules)
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Cable: Cat.5 100 Base/TX Ethernet cable, shielded preferred
Communications:
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Multi-drop full-duplex RS-422 with transformer isolation scheme
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Data Rate: 6Mbps
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I/O refresh rate: 30.1 µs x numbers of slave I/O modules (min: 3; max: 63)
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Communication model: single-master/multi-slave
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Communication method: command – response
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CRC12 and dedicate protocol for eliminating communication errors
„
5.8.2 Specifications
PCI Controller:
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PCI local bus specification Rev. 2.1 compliance
Master Controller:
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Master controller: ASIC
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External Clock: 48MHz
Memory:
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32KB SRAM – 12ns
Interface:
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RS-422 with transformer isolation
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Full duplex communication
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Selectable transfer speed by dip switch (Default 6Mbps)
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Two ports for one control master
Connector:
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RJ45 connector x 4 (H1A, H1B, H2A, H2B for PMC-7852G)