ICS Modbus Interface Board 4819A

Levertijd:
3~4 weken
SKU
4819A

OEM GPIB <-> RS-232 Modbus Interface Board

● Converts simple ASCII commands into Modbus RTU messages. Relieves user from having to generate and check RTU packets.
● Expanded Modbus RTU Command Set now includes Floating Point commands. Controls a wider range of Modbus devices.
● Provides GPIB-to-RS-232 and RS-232-to-RS-232 data paths to Modbus device. Use GPIB or RS-232 to control the Modbus device.
● IEEE-488.2 Compliant. Meets latest GPIB Standards.
● Saves GPIB address, serial settings and user IDN message in non-volatile memory. Personalize the 4819 as part of your system.
● Mounts directly to host chassis' rear panel. Easy installation eliminates extra cables and reduces cost.
● Operates on 5 to 15 Volts. Runs on any power supply.

ICS Modbus Interface Board 4819A GPIB<->Modbus Interface is an IEEE 488.2/GPIB to Serial Interface that easily adapts Modbus slave devices to the GPIB or HP-IB bus. The 4819A lets the user send simple read-write messages on the GPIB bus to control and query slave Modbus devices. The ICS Modbus Interface Board 4819A does all of the Modbus packet formatting and handles the response packets. The 4819A also provides all of the required IEEE-488.2 functions and an expanded IEEE-488.2 Status Reporting Structure to report Modbus communication errors. The ICS Modbus Interface Board 4819A firmware has an expanded Modbus command set and now includes 32-bit floating point commands so it can control newer temperature controllers. The 4819A is fully backward compatible with the earlier 4819 board.


Typical applications are adding a GPIB control to a temperature chamber or to a system that has a Modbus RTU interface.

Meer informatie
Art.nr.
4819A
Fabrikant
ICS Electronics
Land van herkomst
Verenigde Staten
488 Bus Performance
IEEE 488 Bus Interface
The 4819A’s 488 Bus Interface meets IEEE STD 488.2-1987 and has the following capabilities:
SH1, AH1, T5, L3, SR1, PP0, DC1 RL0, DT0, C0 and E1/E2 drivers
Bus drivers incorporate power up/down protection to prevent glitching the bus during power turn-on.
Address Capability Primary addresses 0 ~ 30. Address set by GPIB bus command. Address displayed on LED indicators at power turn-on.
SRQ Generation SRQs are generated per the IEEE-488.2 specification when the unit is not addressed to talk and an enabled bit in the ESR, Questionable or Conditional register becomes set. ESR bits are:
Modbus Error Register set
Serial Buffer full
Command error
Serial error
Execution error
Query error
Power on
Buffers
GPIB Input 2 Kbytes
GPIB Input 1 Kbyte
Serial Input/Output 256 bytes
488.2 Common Commands *CLS, *ESE, *ESE?, *ESR?, *IDN?, *OPC, *OPC?, *RST, *SAV, *SRE, *SRE?, *STB, *TST? and *WAI.
Interface Specifications

Serial signals conform to EIA Specifications for RS-232 signals. J2 is a DTE type interface with DTR, CTR and RTS signals pulled to +V. J3 is a DCE type interface with DCD and DSR signals pulled to +V.

Signals TXD, RXD, GND
Baud Rates 300 ~ 57.6 Kbaud
Data Bits 7 or 8 bits
Parity Odd, Even or None
Stop Bits 1 or 2
SCPI Commands
The 4819A conforms to the SCPI 1994.0 Specification and uses SCPI commands to set its configuration:
GPIB Bus Address
Baud rate select
7/8 data bits
1/2 stop bits
Odd/even/none parity
User IDN Message
Modbus timeout
Controls and Indicators
Indicators
Six on board LEDs show self test diagnostics, GPIB address and status.
PWR On when power applied
RDY On when passed self test
MTA On when talk address recognized
MLA On when listen address recognized
SRQ On when SRQ generated
ERR On when ESR register bit set
Grootte
101.6 x 114.3 x 17.9mm (L x W x H)
Connectors and Headers
GPIB 24-pin IEEE-488 connector with metric lock studs.
Ext. Serial 9-pin DE shell male connector with 4-40 lock studs.
Int. Serial 9-pin DE shell female connector with 4-40 lock studs.
Omgeving
Operation Temperature -10 °C ~ +70 °C
Storage Temperature -40 °C ~ +85 °C
Humidity 0-90% RH without condensation
Power
+5 ± 0.2 VDC or 5.5 to 15 unreg VDC 500 mA (typ.)
Mechanical
Construction Four layer fire-resistant PCB. Connector shells are connected to chassis ground.
Included Accessories
Instruction Manual
Configuration Disk with sample programs
ICS Modbus Interface Board 4819A aanpassen
Aantal

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Uw configuratie
OEM GPIB <-> RS-232 Modbus Interface Board
ICS Modbus Interface Board 4819A
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