2100-A
16
Modbus Notes.
Note 1: Analogue Inputs 1-16 scaling
0-FFF = 0-4095, which is ranged according to the range selected for each input.
For RTD -25 to +25 , then 0 =-25, 4095=+25,
For RTD 0 to +25 , then 0 =0, 4095=+25,
For DCXX range =0 to 100 %, 0=0 %, 4095= 100 %.
Note 2: Counter Inputs
Value ranges from 0-FFFF which is 0 - 65535.
Max speed 50 Hz.
Count value is reset to zero on power up.
Note 3: Analogue Outputs.
Mode is set in Station programming dialog box, Advanced, AO1 & AO2 mode.
Mode 1 is Multiplexer output (AO1, AO2 drive 2100-M only)
Mode 2 is SCADA outputs, AO1,AO2 can be set via protocol.
Mode 3 is retransmission of input to AO1, clock and reset channel selection
Mode 4 is retransmission of input to AO1, binary channel selection
If AO1 and AO2 are used for driving 2100-M units, do not write the analogue out value using the RTU messages
as it will interfere with the 2100-M driver.
30117,30118=Read Only
40117,40118=Read/Write
Note 4:
Analogue Input Speed.
Inputs are scanned sequentially by the A
16
, a read of the data locations, reads the last value read and
does not force the A
16
to read the inputs requested by the protocol read. The normal read speed with all
sixteen inputs is 4 channels/second. Channels that are not scanned can be disabled via the station
programming dialog boxes. To speed up operation for multiplexer mode, set the Scan Mode on the advanced
dialog box to Multiplexer Priority.
Supported Modbus Commands.
Notes:
Maximum length of modbus command = 32 bytes.
Maximum length of modbus reply = 80 bytes.
CITECH Floating Point Format.
Floating Point Byte Order = 1 (3,2,1,0)
CITECH.INI
[Modbus]
FloatMode=1
Set Using modbus help in Citech help file.
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14.02-23
The Ethernet converter on the 2100-A16-NET, the XPort, uses the Ethernet Protocol (IP) for network communica-
tions and the Transmission Control Protocol (TCP) to assure that no data is lost or duplicated, and that everything
sent to the connection arrives at the correct target.
Ethernet
-Interface
RJ45 10Base-T & 100Base-TX Autosensing.
-Compatibility
IEEE802.3
-LEDs
10Base-T & 100Base-TX Activity; Full/Half Duplex.
2100-A
16
-NET Ethernet 10/100.