MKS 651D Series, User Manual, Page: 31 / 162

Chapter Two: Installation Connectors
19
Connectors
Rear Panel Connectors
The 651 controller has five Type “D” connectors on its rear panel (refer to Figure 9, page 32).
The connectors are numbered, from right to left as 1 to 4, as listed in Table 6.
Rear Panel Connector Slot Labels
Slot Number Type “D” Connector
1 RS-232 Serial Interface Connector
2 Interface (I/O) Connector
3 Transducer Connectors
4 Valve Connector
Table 6: Rear Panel Connector Slot Labels
Note
The pinouts for the connectors are listed in Tables 7 to 10, pages 20 to
24. The “Reserved” and “No Connection” pin assignments for the Type
“D” connectors are defined as follows:
1. The “Reserved” pin assignment refers to a pin, which has an internal
connection and may be assigned a function in the future.
2. The “No Connection” pin assignment refers to a pin with no internal
connection.