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2600 Family Instruction Manual

Chapter 8 : Model 2612 Strain Gauge/RTD Module

is the left-most pin on the TB. TB pins are numbered in

sequential order, beginning with pin 1.

8.6 Reset

Upon module reset, all power outputs switch to 1.25 volts out.

A 2612 module will experience a module reset in response to

any of the following conditions:

• Module power-up.

• Watchdog time-out due to soft or hard fault.

• SoftReset or HardReset action request from the client.

• Communication time-out, which will occur if the client

fails to communicate with the 2612 module within a

programmable communication watchdog interval.

8.7 Actions

This section describes the programmable actions that are

supported exclusively by 2612 modules. These actions may be

employed, in any sequence or combination, in MCmd action

lists. In addition to the actions listed here, the 2612 module

also supports all of the common actions that are universally

supported by all IOMs.

Note: Model 2612 has a maximum MRsp size of 26 bytes.

8.7.1 SetMode

Function Programs the conversion mode of one analog

input channel.

Opcode 0x00

Command (Chan),(Mode<7:0>),(Mode<15:8>),

(Mode<23:16>),(Mode<31:24>)

Mode: bits 31 to 20 specify the oversample ratio

(OSR), as shown in the following table. See

Section 8.2.1 for details. Bit 19 specifies the

speed multiplier mode. Bits 18 to 0 must be set to

zero.

Response none

8.7.2 GetInputs

Function Returns the digitized values of all analog input

channels.

Opcode 0x01

Command none

Response (s[0][0]),(s[0][1]),

(s[0][2]),(s[0][3]),

(s[1][0]),(s[1][1]),

(s[1][2]),(s[1][3]),

(s[2][0]),(s[2][1]),

(s[2][2]),(s[2][3]),

(s[3][0]),(s[3][1]),

Table 23: Pinouts of Channel Terminal Blocks

Layout

(top view)

Pin Name Function

1,8 Shld This may be connected to a

cable shield, but the shield

conductor must be

unconnected at the remote

end of the cable in order to

avoid ground loops.

2 Power+ Positive power output.

3 Vref- Negative reference input.

4 In+ Positive signal input.

5 In- Negative signal input.

6 Vref+ Positive reference input.

7 Power- Negative power output.

Table 24: Summary of Model 2612 Actions

Command Opcode Function

SetMode

0x00

Program input mode.

GetInputs

0x01

Return ADC values.

SetVoltages

0x02

Select output voltages.

ReadEeprom

0x0D

Return data from EEPROM

WriteEeprom

0x0E

Write data to EEPROM

1 2 3 4 5 6 7 8

Parameter Function

Chan Analog output channel to be

programmed. Values may range from 0

to 3, inclusive. The six high-order bits

are reserved and should be set to zero.

Mode 32-bit value that specifies the

conversion mode for the target channel.

Value OSR

0xA01 64

0xA02 128

0xA03 256

0xA04 512

0xA05 1024

0xA06 2048

0xA07 4096

0xA08 8192

0xA09 16384

0xA0F 32768

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 79 80

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