AS-i Input

Inputs

The 140 EIA 921 00 module manages up to 31 slaves. Each slave has 4 inputs. The 124 inputs are assigned by 8 words.

Words 1 to 8 - AS-i Bus Inputs

Words 1 to 8 reflect the input state of the 31 slaves. Bits D3 to D0 correspond to the input data bits for each slave.

Distribution	Most significant byte								Least significant byte
Word bits	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Slave Input	D3	D2	D1	D0	D3	D2	D1	D0	D3	D2	D1	D0	D3	D2	D1	D0
Word 1	Slave 3				Slave 2				Slave 1				Unused
Word 2	Slave 7				Slave 6				Slave 5				Slave 4
Word 3	Slave 11				Slave 10				Slave 9				Slave 8
Word 4	Slave 15				Slave 14				Slave 13				Slave 12
Word 5	Slave 19				Slave 18				Slave 17				Slave 16
Word 6	Slave 23				Slave 22				Slave 21				Slave 19
Word 7	Slave 27				Slave 26				Slave 25				Slave 24
Word 8	Slave 31				Slave 30				Slave 29				Slave 28

Words 9 to 10 - Active Slaves (LAS)

Words 9 to 10 show the active slaves. A bit value of "1" indicates that the slave is active.

Words	Most significant byte								Least significant byte
Word bits	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Word 9	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Word 10	31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16

Words 11 to 12 - Detected Slaves (LDS)

Words 11 to 12 show the slaves detected on the bus. A bit value of "1" indicates that a slave has been detected.

Words	Most significant byte								Least significant byte
Word bits	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Word 11	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Word 12	31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16

Words 13 - Status Word

Word 13 contains information on the status.

Words	Most significant byte								Least significant byte
Word 13	D15	D14	D13	D12	D11	D10	D9	D8	D7	D6	D5	D4	D3	D2	D1	D0

D0 - Configuration OK on AS-i bus (software and physical configurations are identical):

1 - OK

0 = NOK

D1 - Slave present with address 0:

1 = present

0 = missing

D2 - Automatic address available:

1= available

0 = unavailable

D3 - Automatic addressing:

1 = automatic assignment of addresses possible

0 = impossible

D4 - Operating mode:

1 = AS-i protected mode

0 = AS-i configuration mode

D5 - Normal operation active:

1 = active

0 = inactive

D6 - AS-i power supply missing:

1 = AS-i power failure

0 = normal power supply for AS-i

D7 - Offline received:

1= AS-i bus in Offline mode

0 = AS-i bus in another mode (not Offline)

D8 - Module diagnostics:

1 = Frozen mode

0 = Exchange of data activated

In order to reactivate the module, you must set the bit D2 of word 9 to 0 (control word of AS-i Output), and then to 1. If the module operates properly when the bit D2 of word 9 is set to 1(control word of AS-i Output), the bit D8 of word 13 (Status word of AS-i Input) must be switched to 0.