User manual

16 Modbus RTU MN744
Table 9 Holding Register Table Continued
Modbus
Ref
Holding Registers
Name Class Type Data Description
40031
40032
Jog Control Speed
Hz
VIS R, R/W FLOAT32
1
Slew speed in Hz for use with Jog Control Mode. R/W in network mode
40033
40034
Jog Control Speed
RPM
VIS R, R/W FLOAT32
1
Slew speed in RPM for use with Jog Control Mode. R/W in network mode
40035
40036
Jog Control Accel
Time
VIS R, R/W FLOAT32
1
Accel time for use with Jog Control. R/W in network mode
40037
40038
Jog Control Decel
Time
VIS R, R/W FLOAT32
1
Decel time for use with Jog Control. R/W in network mode.
40101
40102
DAC Output #1 VIS R, R/W FLOAT32
1
Control Card DAC 1. R/W and pre-gain in Network Mode. RO and post-gain
otherwise. 0-100% uni-polar D/A converter #1.
40103
40104
DAC Output #2 VIS R, R/W FLOAT32
1
Control Card DAC 2. R/W and pre-gain in Network Mode. RO and post-gain
otherwise. ±100% bipolar signal of D/A converter #2.
40105
40106
DAC Output #3 VIS R, R/W FLOAT32
1
AC 1. R/W and pre-gain in Network Mode. RO Option Card 1 D and post-gain
otherwise. ±100% bipolar signal of D/A converter #3.
40107
40108
DAC Output #4 VIS R, R/W FLOAT32
1
Option Card 1 DAC 2. R/W and pre-gain in Network Mode. RO and post-gain
otherwise. ±100% bipolar signal of D/A converter #4.
40109
40110
DAC Output #5 VIS R, R/W FLOAT32
1
Option Card 2 DAC 1. R/W and pre-gain in Network Mode. RO and post-gain
otherwise. ±100% bipolar of D/A converter #5.
40111
40112
DAC Output #6 VIS R, R/W FLOAT32
1
Option Card 2 DAC 2. R/W and pre-gain in Network Mode. RO and post-gain
otherwise. ±100% bipolar of D/A converter #6.
40201
40202
Network Watchdog
Timeout
VIS R/W UNIT32
1
Set network watchdog timer. Units: ms,
0 = disable, enabled by first non-zero write
Resolution: 10 ms Min = 10 ms; Max = 6000 ms
Once enabled, it should be written to within the timeout period else Network
watchdog timeout fault occurs.
40203
40204
Software Reset
Counter
VIS R/W UNIT32
1
This register is cleared at power up and increment on a hardware watchdog
timeout.
Note 1: For 32-bit data, the lower register number contains the lower order 16-bit data and the higher register
number contains the higher order 16-bit data. In addition, when reading or writing 32-bit data, the lower 16-bit
register must be accessed first before the upper 16-bit register.
Table 10 Holding Register Table
41000
. . .
49999
H2 Parameters VIS R/W H2 parameters are mapped to 41000 series registers. All H2 parameter are 32 bits.
Holding register numbers for parameter are computed as follows:
HRN is the Holding Register Number and PN is the Parameter Number Where:
HRN = 2*PN + 41000
Example:
Preset Speed 1 has parameter number P1001 therefore, its HRN number is:
HRN = 2*1001+41000 = 43002 With,
43002 (low order 16-bit data)
43003 (high order 16-bit data)
Figure 2 Example PDU to Send 100 RPM Request
10 9C 4F 00 02 04 00 00 42 C8(Hex)
Base Holding Register
Function Code
Number of Registers
Number of Data Bytes
4 Data Bytes
Float32 value of 100
Low Register
High Register