6ES5385-8MB11
Siemens Simatic S5 Counter Module

The Siemens 6ES5 385-8MB11 is a counter module for S5-90U, S5-95U and S5-100U PLCs. This PLC is a modular PLC system enabling you to add function modules as necessary for your application. The 6ES5385-8MB11 counter module can be used as an up-counter or as an up/down counter for a position decoder. The counting pulses are supplied by a sensor that you can connect to the 15-pin subminiature D female connector of the module. You can choose from two types of sensors that fulfill the following requirements:

• 5-V error voltages according to RS 422 (up to 500 kHz)
• 24-V signals (up to 25 kHz)

As additional inputs, the module has an enable input and a reference input. By using the STEP 5 program, you can assign two setpoints via the I/O bus. Once the counter status reaches one of these values, the respective output completes the circuit at terminal block (Q 0 or Q 1). The status of the outputs is displayed in the diagnostic byte. You can also read the following values by using the STEP 5 program:

• The updated count
• The diagnostic byte

You can preselect the following items on the operating mode switch:

• The function mode
• The position resolution
• The input voltage range of the sensor

See below for more detailed information about the 6ES5385-8MB11 counter module.

6ES5385-8MB11 Technical Specifications