This chapter describes the Request-S7 variants.

S7 family

Firmware

Addressing type

Access to optimized data blocks

iba block family

iba data paths

S7-300

Unlimited

Operands

No

ibaREQ

DP, PN, UDP

S7-400

Unlimited

Operands

No

ibaREQ

DP, PN, UDP

S7-1500

Unlimited

Operands

No

ibaREQ

DP, PN, UDP, ibaNet-E

From V3

Purely symbolic

Yes

ibaREQsym, ibaREQ3sym

PN, UDP, ibaNet-E