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Product description
Main Features & functionality
4.3. Main Features & functionality
4.3.1.
CM2904 basic architecture
0...8V
Signal
8 x AI
Scaling
pullDwn
Signal
2 x FI
Scaling
0...32V
Signal
Scaling
8
PullUp
2,6V
0...32V
Signal
20 x
Scaling
8
MDIN
PullUp
2,6V
19 x
MDIN
0...32V
1 * Itag
4
Signal
(optional)
Scaling
PullUp
2,6V
Batt
4.3.2.
CM2904 Product functions
- Measure and report digital input values.
- Measure and report frequency input values.
- Measure and report analog input values.
- Control PWM outputs in frequency, ramp or ON/OFF modes.
- J1939 compliant communication layer with CAN 2.0b protocol.
- Self-diagnostics and error reporting.
- Provide 5 V and 8 V reference voltages.
CM2904 Instruction Book
PWM Current measure
PA1-PA4
PWM Output status
PF2-PF5
PB0-PB7
PD4-PD5
AN
MUX1
Out
PA5-PA6
8
Sel
PC4-PC5
En
PC0
AN
MUX2
Out
8
Sel
En
PC1
AN
MUX3
Out
7
Sel
En
PC2
Batt+
8VRefOut
5VRefOut
Batt+
Figure 2: CM2904 architecture
© 2009 - 2022 Parker-Hannifin Corporation
MC9S08DV60
PA0 CLK 8MHz
PE2-PE5 SPI
FLASH
PG2-PG5 CNTRL
60kB
RAM
PF1
3kB
PF0
PWM Current measure
PWM Output status
PD0-PD3
Output
FET's
Batt+
PE6-PE7
Buffer
MCP
Buffer
2515
PC6-PC7
+5V +9V
5VRefOut
Power
Supply
8VRefOut
Page 12 of 51
4 * PWM
Output
CAN
CAN
(optional)
2 * LED
(optional)
PWR
LED
(optional)
2 * REF
(5V , 8V)
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