Industrial Communication Systems

36-6 Industrial Communication Systems

indicates in the request APDU the address of the queue count register, and the server will reply with

the value

contained

in

this

queue

count

register,

followed

by

the

value

of

each

queue

data

register,

up

to

a

max

imum

of 31 dat

a

reg

isters.

For

each

function,

the

format

of

the

request

APDU

sent

by

the

client,

and

the

respective

response

APDU

with

which

the

server

replies,

may

be

found

in

Figure

36.4.

Note

that

in

the

functions

accessing

bit-sized

memory

areas

(i.e.,

functions

0x01,

0x02,

0x05,

0x0F),

the

bits

are

sent

packed

8

per

byte.

For

example,

a

function

reading

or

writing

20

bits

will

result

in

t