ACS Marvair CommStat 4 Installation And Operation Manual Download Page 1

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CommStat

™

Modbus Interface Adapter

Installation and Operation Manual

Manufactured By:

Marvair

, An AirX Climate Solutions Brand

P.O. Box 400 • Cordele, Georgia 31010

156 Seedling Drive • Cordele, Georgia 31015

(229) 273-3636 • Fax (229) 273-5154

E-mail:

• Internet: www.marvair.com

The most current version of this manual can be found at

www.marvair.com.

P/03272 12/2021 rev.5

Modbus RTU

Summary of Contents for Marvair CommStat 4

Page 1: ...AirX Climate Solutions Brand P O Box 400 Cordele Georgia 31010 156 Seedling Drive Cordele Georgia 31015 229 273 3636 Fax 229 273 5154 E mail marvairsales airxcs com Internet www marvair com The most...

Page 2: ...and EXPERIENCED PEOPLE 4 USE COMMON SENSE and BE SAFETY CONSCIOUS This is the safety alert symbol When you see this symbol in the manual be alert to the potential for personnel injury or equipment da...

Page 3: ...not exceed 15ft 457cm including all necessary conduit routing Note that the adapter must be installed inside the shelter it is not suitable for installation either inside an HVAC unit or where exposur...

Page 4: ...CommStat 4 Modbus Adapter Installation Operation Page 4 Figure 1 Modbus Interface Adapter External Connections Figure 2 Modbus Interface Adapter Power LED...

Page 5: ...1 19 If a different IP address is required a laptop can be used to re configure the adapter In order to establish communications the laptop must have and IP address within the same subnet as the adapt...

Page 6: ...Installation Operation Page 6 Click Change adapter settings Figure 5 Network and Sharing Center Right click on the Local Area Connection and select Properties from the drop down menu Figure 6 Local A...

Page 7: ...pdated Click Use the following IP address and enter 192 168 1 100 in the IP address field and 255 255 255 0 in the Subnet mask field Do not enter any values into any of the other IP address fields The...

Page 8: ...anges The adapter will reboot and after 60 seconds the new network configuration will be active Note that if the new network parameters are on a different subnet the browser will lose communications t...

Page 9: ...aster Setting 12 Stage 1 Differential See CommStatTM 4 manual 40014 Master Setting 13 Stage 2 differential See CommStatTM 4 manual 40015 Master Setting 14 Off differential See CommStatTM 4 manual 4001...

Page 10: ...slave unit 1 Self explanatory See note 3 40050 Master Output command master to slave unit 2 Self explanatory See note 3 40051 Master Saved value of master unit 1 outputs Self explanatory Internal Use...

Page 11: ...3 Bit 7 is always clear if bit 6 is set this unit is outputting to Y if bit 5 is set this unit is outputting to 2 if bit 4 is set this unit is outputting to O if bit 3 is set this unit is outputting t...

Page 12: ...e is 12 it is in stage 0 if value is 13 it is in stage 1 heating if value is 14 it is in stage 2 heating if value is 15 it is in stage 3 heating if value is 16 it is in stage 4 heating 6 If bit 7 is s...

Page 13: ...igh voltage input enable alarm output enable 40111 Remote Setting 11 Anti short cycle timer 40112 Remote Setting 12 Stage 1 Differential 40113 Remote Setting 13 Stage 2 differential 40114 Remote Setti...

Page 14: ...rd 40143 Remote Function code The purpose of this communication signal Table 2 CommStat 4 Modbus Write Registers The process to update parameters in the CommStat 4 unit is controlled through the use o...

Page 15: ...ABS Thermoplastic flammability rating UL94 5VA External Connections Power Supply Terminal Block The two position power input terminal block has the following connections Wire Color Label Description B...

Page 16: ...el 1 NC 2 Ground 3 RS 485 RX TX A 4 RS 485 RX TX B 5 VCC 6 NC Figure 13 RJ11 Connector Pinout Ethernet RJ45 Connector The female RJ45 socket provides the Ethernet connection for the Master system The...

Page 17: ...CommStat 4 Modbus Adapter Installation Operation Page 17 Dimensional Drawings Figure 15 Adapter Enclosure Dimensions 1...

Page 18: ...CommStat 4 Modbus Adapter Installation Operation Page 18 Figure 16 Adapter Enclosure Dimensions 2...