RIO-10C Registers

Coils (0XXXX)

DO1		1
DO2		2

Discrete Inputs (1XXXX)

DI1		1
DI2		2
AI1		3
AI2		4
AI3		5
AI4		6

Input Registers (3XXXX)

ADC Channel 1	0=0mA, 4095=20mA	1
ADC Channel 2	0=0mA, 4095=20mA	2
ADC Channel 3	0=0mA, 4095=20mA	3
ADC Channel 4	0=0mA, 4095=20mA	4
Supply	4095=FS	5

ADC Channel 1	0=4mA, 32767=20mA	11
ADC Channel 2	0=4mA, 32767=20mA	12
ADC Channel 3	0=4mA, 32767=20mA	13
ADC Channel 4	0=4mA, 32767=20mA	14

ADC Channel 1	0=0mA, 32767=20mA	21
ADC Channel 2	0=0mA, 32767=20mA	22
ADC Channel 3	0=0mA, 32767=20mA	23
ADC Channel 4	0=0mA, 32767=20mA	24
Supply	32767=FS	25

ADC Channel 1	0=4mA, 4095=20mA	31
ADC Channel 2	0=4mA, 4095=20mA	32
ADC Channel 3	0=4mA, 4095=20mA	33
ADC Channel 4	0=4mA, 4095=20mA	34

ADC Channel 1	raw, for cal. only	41
ADC Channel 2	raw, for cal. only	42
ADC Channel 3	raw, for cal. only	43
ADC Channel 4	raw, for cal. only	44
Supply	raw, for cal. only	45

Holding Registers (4XXXX)

DI1Count		1
DI2Count		2
AI1Count		3
AI2Count		4
AI3Count		5
AI4Count		6

Debounce	in ms	11

BaudDiv	baud rate divisor	21
SerialMode	parity & stop bits	22
SerialTimeout	default=5	23
RespDelay	in ms	24
QuietTime	in ms	25
MirSlaveTO	in s	26
MirMasterTO	in ms	27

LEDControl	0=off, 1=on	31
MirrorMode	0=off, 1=slave, 2=master	32
CTSEnable	0=off, 1=on	33

MirRepeat	in s	41
MirTimeout	in s	42
MirFailSafe	bitmapped	43
MirDO1Addr	addr for DO1	44
MirDO2Addr	addr for DO2	45
MirDO1Port	port for DO1	46
MirDO2Port	port for DO2	47
MirDI1Addr	addr for DI1	48
MirDI2Addr	addr for DI2	49
MirDI1Port	port for DI1	50
MirDI2Port	port for DI1	51
MirAO1Addr	addr for AO1	52
MirAO2Addr	addr for AO2	53
MirAO1Port	port for AO1	54
MirAO2Port	port for AO2	55
MirAI1Addr	addr for AI1	56
MirAI2Addr	addr for AI2	57
MirAI3Addr	addr for AI3	58
MirAI4Addr	addr for AI4	59
MirAI1Port	port for AI1	60
MirAI2Port	port for AI1	61
MirAI3Port	port for AI1	62
MirAI4Port	port for AI1	63

DACOffset1	signed	71
DACOffset2	signed	72
ADCOffset1	signed	73
ADCOffset2	signed	74
ADCOffset3	signed	75
ADCOffset4	signed	76

DACScale1	4095=unscaled	81
DACScale2	4095=unscaled	82
ADCScale1	4095=unscaled	83
ADCScale2	4095=unscaled	84
ADCScale3	4095=unscaled	85
ADCScale4	4095=unscaled	86
ADCScale5	4095=unscaled	87

Pulse1	in ms	91
Pulse2	in ms	92
Pulse3	in ms	93
Pulse4	in ms	94

DAC Channel 1	0=4mA, 32767=20mA	101
DAC Channel 2	0=4mA, 32767=20mA	102

DAC Channel 1	0=4mA, 4095=20mA	111
DAC Channel 2	0=4mA, 4095=20mA	112

DAC Channel 1	raw, for cal. only	121
DAC Channel 2	raw, for cal. only	122

BCastReset	see below	131-133
Address		134

DI1LongCount		141-142
DI2LongCount		143-144
AI1LongCount		145-146
AI2LongCount		147-148
AI3LongCount		149-150
AI4LongCount		151-152

SerialNum		161-162
RadioSNum	radio serial number	163-164

LastCalTimestamp	Unix format	171-172
CalInitials		173-174
LastUpdateTimestamp	Unix format	175-176

Mirror Failsafe

Output failsafe levels are determined by the 16-bit value stored in holding register 43:

Bits	Binary Values	Failsafe effect
4, 0	00 10 11	DO1 - no change DO1 - OFF DO1 - ON
5, 1	00 10 11	DO2 - no change DO2 - OFF DO2 - ON
12, 8	00 10 11	AO1 - no change AO1 - LOW AO1 - HIGH
13, 9	00 10 11	AO2 - no change AO2 - LOW AO2 - HIGH

Broadcast Reset

The Modbus address of a RIO-10C device can be changed by broadcasting (i.e. sending to Modbus address 0) a write to holding registers 131-133.

The write should be done with a single, Write Multiple Registers command. In the first two registers (most signifigant word followed by least signifigant word), you should write the device's serial number. In the last register, you should write the new Modbus address.

As per the Modbus standard, the RIO device will not respond to this broadcast. Immediately after receipt, the RIO device will begin responding to requests made of the new address, however, this change will only be permanent if the DIP switches have all been set the same direction.