Yaskawa iQpump Drive User Manual - Manual (Page 210)

D.1 Using Modbus Communication
210 YASKAWA TM.iQp.01 iQpump Drive User Manual
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Related Parameters
Table D.2 Serial Communication Related Parameters
Modbus communication can perform the following operations regardless of the settings in b1-01 and b1-02:
1. Monitoring operation status of the iQpump drive.
2. Setting and reading iQpump drive parameters.
3. Resetting faults.
4. Input multi-function commands.
IMPORTANT: An OR operation is performed between the multi-function command input from the DDC and the command input from
multi-function digital input terminals S3 to S7.
Parameter
No.
Modbus
Address
Parameter Name
Digital Operator
Display
Description
Setting
Range
Factory
Setting
Menu
Location
Page
No.
b1-01 0180H
Frequency Reference
Selection
Reference Source
Selects the speed command (frequency reference) input source.
0: Operator - Digital preset speed d1-01
1: Terminals - Analog Input Terminal A1 (or Terminal A2 see
parameter H3-13)
2: Serial Com - RS-485 terminals R+, R-, S+ and S-
3: Option PCB - Option board connected at 2CN
0 to 3 0
Pump Quick
Setup
b1-02 0181H
Run Command Selection
Run Source
Selects the run command input source.
0: Operator - “Hand” and “Off” keys on digital operator
1: Terminals - Contact Closure on Terminal S1
2: Serial Com - RS-485 terminals R+, R-, S+ and S-
3: Option PCB - Option board connected at 2CN
0 to 3 0
Pump Quick
Setup
H5-01 0425H
Drive Node Address
Serial Com Adr
Selects Drive station node number (address) for terminals R+, R-, S+,
S-.*
Note:
An address of “0” disables serial com.
0 to 20
(H5-08=0)
0 to FF
(H5-08=1)
0 to 63
(H5-08=2)
1F Programming
H5-02 0426H
Communication Speed
Selection
Serial Baud Rate
Selects the baud rate for terminals R+, R-, S+ and S-.*
0: 1200 Baud
1: 2400 Baud
2: 4800 Baud (APOGEE FLN)
3: 9600 Baud (Metasys N2)
4: 19200 Baud
0 to 4 3 Programming
H5-03 0427H
Communication Parity
Selection
Serial Com Sel
Selects the communication parity for terminals R+, R-, S+ and S-.*
0: No Parity
1: Even Parity
2: Odd Parity
0 to 2 0 Programming
H5-04 0428H
Stopping Method after
Communication Error
Serial Fault Sel
Selects the stopping method when a communication error is detected.
0: Ramp to Stop
1: Coast to Stop
2: Fast-Stop
3: Alarm Only
0 to 3 3 Programming
H5-05 0429H
Communication Error
Detection Selection
Serial Flt Dtct
Enables or disables the communications timeout detection function.
0: Disabled - A communications loss will NOT cause a
communications fault.
1: Enabled - If communications are lost for more than the time
specified in parameter H5-09, a communications fault will occur.
0 or 1 1 Programming
H5-06 042AH
Drive Transmit Wait
Time
Transmit WaitTIM
Sets the time from when the Drive receives data to when the Drive
sends data.
5 to 65 5 ms Programming
H5-07 042BH
RTS Control Selection
RTS Control Sel
Enables or disables “request to send” (RTS) control:
0: Disabled (RTS is always on)
1: Enabled (RTS turns on only when sending)
0 or 1 1 Programming
H5-09 0435H
Communication Error
Detection Time
CE Detect Time
Determines how long communications must be lost before a fault is
annunciated. Works in conjunction with parameters H5-05 and H5-04.
0.0 to 10.0
(H5-08=0)
0.0 to 10.0
(H5-08=1)
0.0 to 90.0
(H5-08=2)
2.0 sec Programming
 Denotes that parameter can be changed when the iQpump drive is running.
* After these parameters are changed, iQpump drive power must be cycled before the changes will take effect.
# Hex, see
page A-30 .