Yamaha SRCP - Manual (Page 29)

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I/O INTERF
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Chapter 3 I/O INTERFACE
The SRCP series has I/O interface connectors (EXT. CN and I/O. CN) as a standard feature. The EXT. CN is used
for emergency stop input and 24V power input for I/O control. The I/O. CN consists of an interlock input, 7
dedicated command inputs, 3 dedicated outputs, 8 general-purpose inputs, 5 general-purpose outputs, feedback
pulse outputs, etc. These I/O interfaces allow exchanging commands and data between the SRCP series and exter-
nal equipment. These I/O interfaces can also directly connect to and control actuators such as valves and sensors. To
construct a system utilizing the features of the SRCP series, you must understand the signals assigned to each
terminal on the I/O. CN and EXT. CN and how they work. This chapter covers this fundamental information. This
chapter also provides examples of I/O circuit connections and timing charts for expanding the system by using a
PLC or similar devices. Refer to these diagrams and examples when creating sequence programs.
Terms "ON" and "OFF" used in this chapter mean "on" and "off" of switches connected to the input terminal when
referring to input signals. They also mean "on" and "off" of output transistors when referring to output signals.