The MD485 is an intelligent RS-485 interface that permits a PC to address and communicate with one or more dataloggers over a distance of up to 1200 m. This interface also supports datalogger-to-datalogger communication, callback from a remote datalogger, PC-to-printer communications, and digital camera-to-datalogger connections.
Read MoreThe MD485 includes three ports (RS-232, CS I/O, RS-485) for connecting a PC, a data logger, or another MD485. Any two ports can be used at a time.
The MD485 can be configured to provide transparent communications, MD9 emulation, and PakBus networking. Although the MD485 can emulate an MD9, the MD485 can not be added to an existing MD9 network. PakBus networking requires the data loggers to use the PakBus communications protocol. PC400 or LoggerNet software is used to initiate and control the communications link.
The MD485 is shipped with the 10873 cable and SC12 cable for connecting it to a PC or data logger. Point-to-point and point-to-multipoint networks use the following equipment:
AC power is typically used at the computer site; a pn 15966 wall charger is required. At the field site, the MD485 is powered by the data logger through its CS I/O port. If the MD485 is connected to the data logger’s RS-232 port instead of the CS I/O port, or if the data logger was purchased before 12/97, a pn 14291 Field Power Cable is required. Phone-to-MD485 and spread spectrum radio-to-MD485 networks also require a power supply with a null modem port . An A100 adapter used with a PS150 or PS200 power supply provides this capability. The PS150 or PS200 is recharged via a wall charger or a solar panel.
Function | Permits a PC to address and communicate with one or more data loggers over a distance of up to 1,200 m. |
Transmission Distance or Area | 1,219 m (4,000 ft) Can increase distance by using more MD485s or combining with spread-spectrum radios, Ethernet, or phone. |
Baud Rates | 1200, 9600, 19.2k, 38.4k, 57.6k, 115.2k bps |
Voltage | 12 Vdc (from data logger or pn 15966 wall charger) |
Surge | Complies with IEC61000-4-5, test level 3 (±2 kV, 2 Ω coupling impedance) |
Operating Temperature |
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Service Requirements | CABLE2TP two-twisted pair cables must be installed between networked data loggers and base. |
Maximum Cable Length | 1,219 m (4,000 ft) |
Dimensions | 15.88 x 6.35 x 1.91 cm (6.25 x 2.5 x 0.75 in.) |
Weight | 127.6 g (4.5 oz) |
Current Drain |
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Standby Mode | 1.2 mA |
Communicating | 2 to 7 mA |
Power |
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Standby Mode | 14.4 mW |
Communicating | 24 to 84 mW |
ESD |
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Air Discharge | Complies with IEC61000-4-2, test level 4 (±15 kV) |
Contact Discharge | Complies with IEC61000-4-2, test level 4 (±8 kV) |
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Product | Compatible | Note |
---|---|---|
21X (retired) | ||
CR10 (retired) | ||
CR1000 (retired) | ||
CR10X (retired) | ||
CR200X (retired) | ||
CR206X (retired) | ||
CR211X (retired) | ||
CR216X (retired) | ||
CR23X (retired) | ||
CR295X (retired) | ||
CR300 | Use a 18663 null modem cable. | |
CR3000 (retired) | ||
CR350 | Use a 18663 null modem cable. | |
CR500 (retired) | ||
CR5000 (retired) | ||
CR510 (retired) | ||
CR6 | The CR6 has integrated RS-485. | |
CR800 (retired) | ||
CR850 (retired) | ||
CR9000 (retired) | ||
CR9000X (retired) |
A desiccated, non-condensing environment is required. The MD485 includes built-in keyhole flanges for mounting to the backplate of a Campbell Scientific enclosure.
The MD485 can be combined with our AVW200-series Vibrating Wire Interfaces, CC640 Digital Camera, Ethernet links, phone modems (including cellular), and spread spectrum radios. Field site equipment should be housed in an environmental enclosure. Information about configuring the other devices is provided in the user manuals.
AC power is typically used at the computer site; a pn 15966 wall charger is required. At the field site, the MD485 is powered by the data logger through its CS I/O port. If the MD485 is connected to the data logger’s RS-232 port instead of the CS I/O port, or if the data logger was purchased before 12/97, a pn 14291 Field Power Cable is required. Phone-to-MD485 and spread spectrum radio-to-MD485 networks also require a power supply with a null modem port. An A100 adapter used with a PS150 or PS200 power supply provides this capability. The PS150 or PS200 is recharged via a wall charger or a solar panel.
Current MD485 operating system. Requires the Device Configuration Utility.
A software utility used to download operating systems and set up Campbell Scientific hardware. Also will update PakBus Graph and the Network Planner if they have been installed previously by another Campbell Scientific software package.
Supported Operating Systems:
Windows 11 or 10 (Both 32 and 64 bit)