VACON CX
Modbus user’s manual
Page
4
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Vacon Oy
Phone +358-201-2121
Fax: +358-201-212 205
2.
SPECIFICATIONS
Modbus -
Interface
9-pin DSUB connector (female)
connections
Transfer method
RS-485, Half duplex
Transfer cable
Twisted pair (1 pair and shield)
Electrical isolation
500 V DC
I/O -control
Digital input (4 pcs)
24 V: “0”
≤
10 V, “1”
≥
18 V, R
i
= 5 k
Ω
connections
Digital output (4 pcs)
Open collector output, 50 mA/48 V
Termistor input (1 pcs)
R
trip
= 4.7 k
Ω
Encoder input (3 pcs)
24 V: “0”
≤
10 V, “1”
≥
18 V, R
i
= 3.3 k
Ω
5 V : “0”
≤
2 V, “1”
≥
3 V, R
i
= 330
Ω
Aux. voltage
24 V (
±
20%), max 50 mA
Safety
Fulfills EN50178 standard
Table 2-1. Specifications
Communication mode
RTU
Function codes
1
2
3
4
5
6
8
Broadcast (codes 5,6)
Read Digital Output
Read Digital Input
Read Holding Register
Read Input Register
Write Single Digital Output
Write Single Register
Diagnostic
Communication parameters
-
Address
- Parity
- Stop Bits
- Baud Rate
1 to 247
None, Odd or Even
1
300 to 19200 Baud
Table 2-2. Modbus communication data