Watson-Marlow MC12 - Manual (Page 43)

Operators and Reference Manual
MC12
MC12 OM RM 1.03_EN Version: 1.03 Date: 2010-11-17 Page 43 of 46
10.1 "port 1", Arrow 1
Socket for Flexicon peripheral equipment such as the bottom-up filling system or connecting to
external control.
10.2 "RS-232/1", Arrow 2; "RS-232/2", Arrow 3
Pin 2. Receive data Pin 2. Receive data
Pin 3. Transmit data Pin 3. Transmit data
Pin 4. +12 Vdc (1KOhm) Pin 4. +12 Vdc (1KOhm)
Pin 5. Ground Pin 5. Ground
Pin 7. Request to send Pin 7. Request to send
Pin 8. Clear to send Pin 8. Clear to send
10.3 "external 1", Arrow 4
Pin 1. Input for start signal
+5 +50 Vdc, min. 100 msec. Front triggered.
Pin 2. Output, +24 Vdc, max 250 mA.
Pin 3. Ground
Pin 4. Status output, max. +50 Vdc, 250 mA.
Pin 4 is connected to 0V via a relay when a connected drive is dispensing or
pumping.
Pin 5. No connection.
10.4 "external GO", Arrow 5
Pin 1. Input for start signal.
+5 +50 Vdc, min. 100 msec. Front triggered.
Pin 2. Output, +24 Vdc, max 250 mA.
Pin 3. Ground.
Pin 4. Status output, max. +50 Vdc, 250 mA.
Pin 4 is connected to 0V via a relay when a connected drive is dispensing or
pumping.
Pin 5. No connection.
10.5 "net", Arrow 6
The "net" socket is reserved for RS-485 communication with the connected drives.
Communication may only take place via original Flexicon cables.
10.6 "expansion", Arrow 7
Socket for extensions. Only to be used in connection with original Flexicon equipment.
10.7 "mains", Arrow 8
The mains connection.