16 bit addresses for reading modbus of JMC JASD servo drives

Hello,
After a long internet search, I found some posts on this forum from members using modbus rtu to communicate with JMC JASD4002-20b servo drives.
Although I do not use linuxcnc, I think there are members who can help me.

My cnc controller (szgh cnc1000MCdb) uses three 16-bit addresses for modbus RTU communication with the servo drives.
According to the manual they need the following addresses:

• absolute encoder address of lower 16bits multi-turn data;
• absolute encoder address of higher 16bits one-revolution data;
• absolute encoder address of lower 16bits one-revolution data.

Does anyone know these address numbers?

Thanks


 

For the longest time it was missing from their official user guide, but the ModBus register are now in the manual:

www.jmc-motor.com/file/2006130328.pdf

Page: 125
Address decimail: 2125/2126

 

Thanks 0x2102,
In the manual I found the addresses but how should I interpret them.
 
Is address 2125 the absolute encoder address of lower 16bits multi-turn data and address 2126 the absolute encoder address of higher 16bits one-revolution data?
I also found a parameter P00-29. Does this parameter change addresses 2125 and 2126 in low or high?

As i mentioned in the previous post i need three addresses. In the manual i found some other 16 bit addresses.
 
Here it refers to upper and lower bit addresses. I know nothing about modbus and 16 bit addresses but are these relevant.
 

As far as I remember the JMC Servo only have 2 x 16 Bit register for absolute position.

2125 - absolute turns
2126 - absolute steps

That might be all you need. You can try this or contact SZGH support to get clarification.

I am going to check with SZGH if two bit addresses are enough .
Thanks 0x2102 for your help.

@ 0x2102,

How can you tell if these 16 bit addresses are high or low because SZGH asks for a High and low 16 bit address?
When do you need or use, in general, a high or low 16 bit address?