
2600 Family Instruction Manual
Chapter 6 : Model 2608 Analog I/O Module
Command (FCode)
Response none
6.6.9 ReadEeprom
Function Returns a byte value from the module’s
non-volatile memory.
Opcode 0x0D
Command (Adrs)
Response (Data)
Notes This function is used by the middleware to store
calibration data for the module. Refer to the
distribution media for details.
6.6.10 WriteEeprom
Function Stores a byte value in the module’s non-volatile
memory.
Opcode 0x0E
Command (Adrs),(Data)
Response none
Notes This function is used by the middleware to store
calibration data for the module. Refer to the
distribution media for details.
Due to the lengthly time required to write a byte
to the EEPROM, this action should be invoked
only once per command packet.
6.7 Specifications
Parameter Function
FCode Enumerated value that specifies the
power line frequency: set to 0 (default)
for 60 Hz, set to 1 for 50 Hz.
Parameter Function
Adrs Memory address that is to be read from.
Parameter Function
Data Byte value retrieved from the
EEPROM.
Parameter Function
Adrs Memory address that is to be written to.
Data Byte value that is to be stored.
Table 15: Model 2608 Specifications
Analog Inputs Resolution 16 bits
Input channels 16
Conversion rate 500 samples/second for each input channel.
Input range ±10V, ±100mV software selectable per channel.
4-20mA selectable by option shunts per channel.
Input impedance 100 megohm with no thermocouple shunts installed.
Sensor support Thermocouple cold-junction compensation.
Thermocouple open-circuit detection.
Analog Outputs Resolution 16 bits
Output channels 0 (2608-0), 4 (2608-4) or 8 (2608-8).
Output range ±10V
Output current 2mA, max
Auxilliary Power Output Power rating Shunt selectable for each channel:
10VDC ±5% @ 400mA (total for all channels), or
24VDC @ 500mA (total for all channels)
Fuse Socketed 500mA fuse per channel. Wickman 396-0500-044 or equivalent.
Mating Connectors
(*) = included with module
IOM port (qty 1) RJ-45 plug, AMP 554169 or equivalent
Analog outputs (qty 0, 4 or 8) (*) Molex 22-01-3067 with 08-50-0114 pin contacts (6), or equivalent
Analog inputs (qty 8) (*) Pluggable TB, 10-pin, RIA 31166110 or equivalent
Temperature Operating range 0 to 70°C
Power Input power +24V ±5% @ 80mA.
Dimensions Outer dimensions 5.0H x 8.7W x 1.8D inches, including DIN mounting frame. Depth is specified with
respect to surface of DIN rail support panel; additional clearance required for field wiring.
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