Azbil Micro Flow CMS9500 - Page 23

15
Chapter 3. Mounting and Wiring
z
Wiring for inputting totalizer pulse output into a counter
• Non-voltage input type
• Voltage input type
z
Wiring for using flow rate serial data output
• Wiring example
• Communication protocol
The currently displayed instantaneous flow rate data and totalized
flow data are sent as ASCII code.
"F" is sent first followed by the instantaneous flow rate data, and
then "T" followed by the totalized flow data.
Example: The instantaneous flow rate is 100 L/min (standard), and
the totalized flow is 100 x 10 L.
• Communication specifications
Item Description
Communication system RS-232C, start/stop synchronization
Transmission speed 9600 bps
Character length 8 bits
Stop bits 2 bits
Parity bit None
Data transmission cycle 100 ±10 ms
8
10
EV2
EV COM
Input
0 V
Counter
Counter
Pull-up resistor
30 V DC or less
EV COM
EV2
8
10
Input
0 V
EV1
RXD
GND
RTS
CTS
+5 V
EV COM
10 k
+5 V
10 k
RS-232C
driver
CMS
Interface
(made by the user)
Computer
RS-232C port
9
10
100 L/min (standard)
Instantaneous ow rate
Totalized ow
100X10L 0Dh 0Ah