Edwards SCU-350 Series

SCU-350 Series Control Unit for Turbomolecular Pump
MT-21E-201-E
Page 62
5
SERIAL COMMUNICATION PROTOCOL
5.2.4 Communication mode
This STP control unit has two remote input modes. (see Figure 34)
Remote input mode is selected by DSW-B No.5.
DSW-B No.5 ON:
Remote input from CON3 is effective (RS-232C)
DSW-B No.5 OFF:
Remote input from I/O TB2 Terminal Block is effective. (Setting "OFF" at delivery)
Front Panel Side
Expanded View of
DSW-B Switch
(Settings at Delivery)
Front Panel Side
8
NO
Not Used
Remote input mode
Set Rated Speed
Not Used Not Used Not Used Not Used Not Used
7654321
Figure 34 - Setting of DSW-B
DSW-B No.5 Operation Mode Remote Input Remote Output
ON MANUAL - TB1
REMOTE CON3 (RS-232C)
OFF MANUAL -
REMOTE TB2
Table 24 - Remote Input / Output Signal