描述
PLC内存有用户及系统两大部分。用户内存主要用以存储用户程序，个别的还将其中的一部分划为系统所用。系统内存是与CPU配置在一起的。CPU既要具备访问这些内存的能力，还应提供相应的存储介质。
Alcatel MDR-5600 Relay Intrfc Card AE-27AD-1 8220348001
Expedited shipping available
Alcatel MDR-5600 DTMF Keypad Card AE-18T 644-0032-001
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Alcatel MDR-5600 Audio Program Card 690-0209-001
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ALCATEL 622-8946-001 CARD FD 18L-2
Alcatel MDR-6000 Line Build Out Card 695-7044-001
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Alcatel 621810-000-003 HTUC231 HDSL TERM card 62181000
ALCATEL-LUCENT DUAL T1 1.544 MBPS CARD 90-0564-01
One-day shipping available
Newbridge / Alcatel RS-422 Card P/N: 90-1549-01
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Alcatel 690-3703-001 Conditioner Card N54N5465 w/ Wires
Expedited shipping available
