CNT204/R PLC的存儲器主要包括以下幾種。

（1）只讀存儲器

（2）可編程只讀存儲器

（3）可擦除可編程只讀存儲器

（4）電可擦除可編程只讀存儲器

（5）隨機存取存儲器

（3）輸入/輸出（I/O）模塊

①開關量輸入模塊

開關量輸入設備是 各種開關、按鈕、傳感器等，PLC的輸入類型通常可以是直流、交流和交直流。輸入電路的電源可由外部供給，有的也可由PLC內部提供。

②開關量輸出模塊

輸出模塊的作用是將CPU執行用戶程序所輸出的TTL電平的控制信號轉化為生產現場所需的，能驅動特定設備的信號，以驅動執行機構的動作。

（4）編程器

編程器是PLC重要的外部設備，利用編程器可將用戶程序送入PLC的用戶程序存儲器，調試程序、監控程序的執行過程。編程器從結構上可分為以下三種類型。

CNT204/R  

RELIANCE ELECTRIC AC DC DRIVE 30 MINPAK PLUS

Reliance Electric 1SU41001 1HP SP500 VS AC Drive 1 HP

Reliance Electric MD60 AC Drive 6MDVN-2P3101

Expedited shipping available

4 NIB RELIANCE ELECTRIC BRUSHHOLDER FINISHED 700304-3R

AB RELIANCE ELECTRIC 500 HP AC DRIVE 608 AMPS 480 V #1

Reliance Electric 7.5 HP AC Drive

RELIANCE ELECTRIC DFSA MAXPAK PC CARD 0-52823 

Reliance Electric Transformer 65248-9S TR9774 5000VA 

Reliance Electric 57C380 Communication Card

Reliance Electric 0-51862-1 USAB Universal Sum Amp

Reliance Electric 0-52806-1 TLOB Tach Loss Overspeed

Reliance Electric AC Drive - free shipping

RELIANCE ELECTRIC ISU41001 SP500 AC CONTROLLER

Reliance Electric 0-52806-1 TLOB Module PCB

RELIANCE ELECTRIC 6MDDN-6P0101 A-C DRIVE MD60 *NNB*

Reliance Electric 63480-6L Resistor

RELIANCE ELECTRIC RECTIFIER STACK 86466-87T

Expedited shipping available

RELIANCE ELECTRIC 6MDDN-6P0101 A-C DRIVE MD60 **XLNT***

Reliance Electric AC VS VFD Inverter drive GP-2000 5hp

RELIANCE ELECTRIC RESISTOR 63481-6U

Expedited shipping available

Reliance Electric 57403-G/57C403 115V AC Output Source

Reliance Electric 404844-DF Brush RE44DF 404844DF

One-day shipping available

RELIANCE ELECTRIC 45C230A AUTOMATE 15E 45C230A

Expedited shipping available

Reliance Electric 0-51831-1 CVTB Module PCB

NIB RELIANCE ELECTRIC PRINTED CIRCUIT CARD 0-58202

RELIANCE ELECTRIC 0-51851-6 (CRCG) GOOD TAKEOUT

Reliance Electric 57C-410/57C410/0-57C410 Output

One-day shipping available

Reliance Electric Analog I/O 61C351A

Expedited shipping available

Lot of 7 RELIANCE ELECTRIC 701819-12AD POWER CUBE 

Reliance Electric FCCD Card 0-51893-3 05189

Reliance Electric 0-52838 052838 USRA Drive Module

RELIANCE ELECTRIC 1220611 THYRISTOR 140A 1600V **NIB**

Reliance Electric 57C404A/57C404/57C-404A/57C404-A

One-day shipping available

Reliance Electric 57C-431//57C431/57C431A NICE!!!!

One-day shipping available

Reliance Electric 1DB2002 Dynamic Braking Drive A-C V*S

New Reliance Electric AutoMax 57C441 modbus plus NIB

RELIANCE ELECTRIC 0-52808-2 (OLVC) GOOD TAKEOUT

Reliance Electric 0-52839 TSSA Drive Module GUARANTEED

Reliance Electric MC-D5006-A IC Memory Card PSC Memcard

CNT204/R