Lenze I/O system 1000 System Manual - Manual (Page 297)

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Setting the parameters of analog I/O
4 analog outputs 0/4 ... 20 mA (12 bits) − EPM−S503
8
l
297 EDSIO1000 EN 7.0
8.8.10 4 analog outputs 0/4 ... 20 mA (12 bits) − EPM−S503
Parameter data
Index/sub
index Name Description/value Lenze
0x3100/x Reserved 0
0x3101/x Short−circuit
detection
Bit 0: Channel 1 (0 = deactivated; 1 = activated)
Bit 1: Channel 2
Bit 2: Channel 3
Bit 3: Channel 4
Bits 4 ... 7: Reserved 00
h
0x3102/x 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
0x3103/x Function channel 2 31
h
0x3104/x Function channel 3 31
h
0x3105/x Function channel 4 31
h
0x3106/x Reserved 0
... ... ...
0x311D/x Reserved 0
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