WESDAC-D20-PS 控制模块  提供了通信通道

D20控制模块由WESTERM d20k和WESDAC d20k两个可拆卸模块组成。顶部模块WESDAC D20 K处理采集到的数据，并将其传送给主D20处理器，

底部模块westermd20k由接线端子组成，现场接线端子由接线端子组成。WESDAC d20k终端板处理所有与WESDAC d20k模块的连接。这些连接是:

. D.20网口

.9600波特RS232维护口。WESDAC d20k模块地址。继电器输出外部直流电源控制输出电压

d20是一个32点控制输出接口模块。根据系统要求，32个输出驱动器可以安排在几个硬件/软件配置中。D20K保证了控制输出接口的安全操作。D20主处理器请求的所有控制动作都由D20K发起、计时、复位和验证。

D20K还提供本地/远程开关和控制输出熔断。本地/远程开关是手动开关，用于在维护时关闭D20K继电器线圈电源。脱机指示传递给D20主处理器，它作为主机的伪状态可用。

提供了两个db9连接器，以允许D.20 Link的菊花链。该链路提供了通信通道，主D20 CPU处理器可以通过该通道与wesddac20k进行通信。WESDAC D20 K的电源也通过相同的电缆组件提供。通过VT100终端仿真器为WESMAINT D20维护端口提供单个db9连接器。

WESDAC D20K的地址跳线块位于westdac D20K上。跳线块上的地址与D.20链路上的模块地址相对应。

只有无源元件安装在wESDAC D20 K上，而所有有源元件都安装在wESDAC D20 K上。

WESTERM和wESDAC的这种组合简化了现场维修和维护设置，因为wESDAC d20k可以在不干扰任何现场布线的情况下进行更换。

WESDAC-D20-PS 控制模块  提供了通信通道

The D20 control module consists of two detachable modules, the WESTERM d20k and the WESDAC d20k. The top module, WESDAC D20K, processes the collected data and transmits it to the main D20 processor.

The bottom module westermd20k consists of terminal blocks, and the field terminal blocks consist of terminal blocks. The WESDAC d20k terminal board handles all connections to the WESDAC d20k module. These connections are:

D.20 Network port

.9600 baud RS232 maintenance port. WESDAC d20k module address. The relay outputs an external DC power supply to control the output voltage

The d20 is a 32-point control output interface module. Depending on system requirements, 32 output drivers can be arranged in several hardware/software configurations. The D20K ensures the safe operation of the control output interface. All control actions requested by the D20 main processor are initiated, timed, reset, and verified by the D20K.

The D20K also offers local/remote switching and control output fuses. The local/remote switch is a manual switch used to turn off the power to the D20K relay coil during maintenance. The offline indication is passed to the D20 main processor, which is available as a pseudo-state of the host.

Two db9 connectors are provided to allow daisy-chaining of the D.20 Link. This link provides the communication channel through which the main D20 CPU processor can communicate with wesddac20k. Power for the WESDAC D20K is also supplied through the same cable assembly. A single db9 connector for the WESMAINT D20 maintenance port is provided through the VT100 terminal emulator.

The address jumper block of WESDAC D20K is located on the westdac D20K. The address on the jumper block corresponds to the address of the module on the D.20 link.

Only passive components are installed on the wESDAC D20K, while all active components are installed on the wESDAC D20K.

This combination of WESTERM and wESDAC simplifies field repair and maintenance setup, as the wESDAC d20k can be replaced without interfering with any field wiring.