武汉路易达自动化设备有限公司
联系人：李先生
电话：18971414423
固话：027-83238817
传真：027-61537051
QQ:505528191
地址：武汉市东西湖区走马岭汇通公路港信息交易中心3-035

（1）内部辅助继电器（AR） 内部辅助继电器的作用是在PLC内部起信号的控制和扩展作用，相当于接触继电器线路中的中间继电器。CPM1A机共有512个的内部辅助继电器，其编号为20000~23115，所占的通道号为200CH~231CH。内部辅助继电器没有掉电保持状态的功能。

（2）暂存继电器（TR） 暂存继电器用于具有分支点的梯形图程序的编程，它可把分支点的数据暂时贮存起来。CPM1A型机提供了8个暂存继电器，其编号为TR0~TR7，在具体使用暂存继电器时，其编号前的“TR”一定要标写以便区别。TR继电器只能与LD，OUT指令联用，其他指令不能使用TR作数据位。

（3）保持继电器（HR） 保持继电器用于各种数据的存储和操作，它具有停电记忆功能，可以在PLC掉电时保持其数据不变。保持作用是通过PLC内的锂电池实现的。保持继电器的用途与内部辅助继电器基本相同。CPM1A系列PLC中的保持继电器共有320个，其编号为HR0000~HR1915，所占的通道号为HR00~HR19。在编程中使用保持继电器时，除了标明其编号外，还要在编号前加上“HR”字符以示区别，例如“HR0001”。

1745-PT1
1746-A10
1746-A13
1746-A7
1746-BAS
1746-BAS-T
1746-BLM
1746-BTM
1746-C16
1746-FIO4I
1746-FIO4V
1746-HT
1746-IA16
1746-IA4
1746-IA8
1746-IB16
1746-IB32
1746-IB8
1746-IC16
1746-IG16
1746-IH16
1746-IM16
1746-IM4
1746-IM8
1746-IN16
1746-INT4
1746-IO12
1746-IO12DC
1746-IO4
1746-IO8
1746-ITB16
1746-ITV16
1746-IV16
1746-IV32
1746-IV8
1746-NI16I
1746-NI16V
1746-NI4
1746-NI8
1746-NIO4I
1746-NIO4V
1746-NO4I
1746-NO4V
1746-NO8I
1746-NO8V
1746-NR4
1746-NR8
1746-NT4
1746-NT8
1746-OA16
1746-OA8
1746-OB16
1746-OB16E
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