Watson-Marlow MC100 - Manual (Page 21)

Users Manual
MC100
MC100 DeviceNet OM 1.15 EN Version: 1.04 Page 21 of 43
7.1.4 Process control bits for the pumps
To control each pump one byte (8 bits) is dedicated as described below.
Minimum one word is transmitted for pump control. The number of pumps connected is a parameter,
which is part of the configuration of the number of cyclic bytes of the network.
Word 8 Word 7 Word 6 Word 5 Word 4 Word 3 Word 2 Word 1
P16 P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1
Bit mapping in each command byte:
7 6 5 4 3 2 1 0
Direction
Disable in
Par./Serial
RESET PUMP DISP START
Bit 0: START
Starts a single Dispense cycle, when the Pump is set in Dispense mode (Bit. 1)
This bit must be cleared upon receiving the BUSY bit in the status byte for the
pump, see below.
Bit 1: DISP Sets the pump in dispense mode and thereby enables the START bit to start
dispenses. If removed during a dispense, the pump stops immediately.
Bit 2: PUMP 2 Starts pump running continuously with the speed set in ADI 3.
Bit 3: Reserved for future use
Bit 4: RESET To be used with future pumps
Bit 5: Disable pump in parallel and serial mode.
Bit 6: Direction 3 [1/0] [Backwards/Normal] pump and dispense direction.
Bit 7 Reserved for future use
2 The DISP bit has higher priority and must be cleared before setting the PUMP bit.
3 Available for pumps able to handle this function (GD30).