Lenze I/O system 1000 System Manual - Manual (Page 412)

PROFIBUS communication
Setting the parameters of analog I/O
2 analog outputs 0/4 ... 20 mA (12 bits) − EPM−S502
9
l
412 EDSIO1000 EN 7.0
9.5.9 2 analog outputs 0/4 ... 20 mA (12 bits) − EPM−S502
Parameter data
During the execution time you can access the parameter data via the following data sets:
Data set Name Description/value Lenze
No. Byte
0 1 Short−circuit detection Bit 0: Channel 1 (0 = deactivated; 1 = activated)
Bit 1: Channel 2
Bits 2 ... 7: Reserved
00
h
128 0 Function channel 1 48 (30
h
): 4 ... 20 mA / 0 ... 27648
dec
64 (40
h
): 4 ... 20 mA / 0 ... 16384
dec
49 (31
h
): 0 ... 20 mA / 0 ... 27648
dec
65 (41
h
): 0 ... 20 mA / 0 ... 16384
dec
255 (FF
h
): channel deactivated
31
h
129 0 Function channel 2 31
h
With the formulas listed in the following you can convert a digital value into an analog
output value and vice versa.
Output area Current (I) Decimal (D) Hex Range Conversion
(Fct. no.) [mA]
0 ... 20 mA
(31
h
)
23.52 32511 7EFF Overflow
I = D * 20 / 27648
D = 27648 * I / 20
20 27648 6C00
Nominal range 10 13824 3600
0 0 0000
Not possible, is limited to 0 mA Underflow
0 ... 20 mA
(41
h
)
25 20480 5000 Overflow
I = D * 20 / 16384
D = 16384 * I / 20
20 16384 4000
Nominal range 10 8192 2000
0 0 0000
Not possible, is limited to 0 mA Underflow
4 ... 20 mA
(30
h
)
22.81 32511 7EFF Overflow
I = D * 16 / 27648 + 4
D = 27648 * (I−4) / 16
20 27648 6C00
Nominal range 12 13824 3600
4 0 0000
0 −6912 E500 Underflow
4 ... 20 mA
(40
h
)
24 20480 5000 Overflow
I = D * 16 / 16384 + 4
D = 16384 * (I−4) / 16
20 16384 4000
Nominal range 12 8192 2000
4 0 0000
0 −4096 F000 Underflow