描述
在选择一台PLC时，用户可能会面临一些特殊类型且不能用标准I/O实现的I/O限定（如定位、快速输入、频率等）。此时用户应当考虑供销厂商是否提供有特殊的有助于最大限度减小控制作用的模块。有些特殊接口模块自身能处理一部分现场数据，从而使CPU从繁重的任务处理中解脱出来。
Lot 50 Batteries For Symbol Motorola 216731501 MC5040
Symbol Motorola MC55 Barcode Scanner MC5590-PU0DKRQA7WR
NEW w/ WARRANTY WiFi BlueTooth MC70 MC75 MC50 LASER PDA
Symbol Motorola MC55 Barcode Scanner MC5590 PDA Imager
NEW with WARRANTY Camera WiFi BlueTooth MC70 MC75 MC50
Symbol Motorola MC7090 1D Scan Numeric Key w/ Cradle
– MC70 – MC7090 – Qty Available
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Symbol Motorola MC7094 1D Scan Numeric Key w/ Cradle
– MC70 – MC7094 – Qty Available
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Symbol Motorola MC7094-PKCDJQHA8WR
MC7094 eGPRS 2D Scanner Qwerty Key w/ Cradle
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Symbol Motorola MC7094-PKCDJRHA8WR
MC7094 eGPRS 2D Scanner Numeric Key w/ Cradle
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